<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><Version>2.2.0.25</Version><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><ReportLongName>0210 - Disclosure - Debt</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelColumn>false</LabelColumn><CurrencyCode>USD</CurrencyCode><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName>1/1/2010 - 12/31/2010
USD ($)

USD ($) / shares
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   &lt;!-- Begin Block Tagged Note 10 - us-gaap:DebtDisclosureTextBlock--&gt;
   &lt;div style="margin-left: 0%"&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent; text-align: left"&gt;
   &lt;tr&gt;
       &lt;td width="3%"&gt;&lt;/td&gt;
       &lt;td width="97%"&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="top"&gt;
       &lt;td&gt;
       &lt;b&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;10.&amp;#160;&lt;/font&gt;&lt;/b&gt;
   &lt;/td&gt;
       &lt;td&gt;
       &lt;b&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;Debt&lt;/font&gt;&lt;/b&gt;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The components of debt and a reconciliation to the carrying
       amount of current and long-term debt are presented in the table
       below.
   &lt;/div&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table border="0" width="100%" align="center" cellpadding="0" cellspacing="0" style="font-size: 9pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent; text-align: left"&gt;
   &lt;!-- Table Width Row BEGIN --&gt;
   &lt;tr style="font-size: 1pt" valign="bottom"&gt;
       &lt;td width="84%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=01 type=maindata --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=lead --&gt;
       &lt;td width="5%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=lead --&gt;
       &lt;td width="5%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=hang1 --&gt;
   &lt;/tr&gt;
   &lt;!-- Table Width Row END --&gt;
   &lt;!-- TableOutputHead --&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="6" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;December&amp;#160;31,&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;2010&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;2009&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="6" align="center" valign="bottom"&gt;
       &lt;b&gt;(in millions)&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;!-- TableOutputBody --&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       &lt;b&gt;L-3 Communications:&lt;/b&gt;
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       Borrowings under Revolving Credit
       Facility&lt;sup style="font-size: 85%; vertical-align: top"&gt;(1)&lt;/sup&gt;
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       5.20%&amp;#160;Senior Notes due 2019
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       1,000
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       1,000
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       4.75%&amp;#160;Senior Notes due 2020
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       800
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;1&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2013
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       400
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;1&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2014
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       400
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       5&lt;sup style="font-size: 85%; vertical-align: top"&gt;7&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2015
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       650
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       650
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;3&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2015
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       1,000
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       1,000
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 36pt"&gt;
       Subtotal
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       3,450
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       3,450
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       &lt;b&gt;L-3 Holdings:&lt;/b&gt;
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       3%&amp;#160;Convertible Contingent Debt Securities due 2035
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       700
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       700
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Principal amount of long-term debt
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       4,150
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       4,150
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       Less: Unamortized discounts
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       (13
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       )
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       (38
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       )
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Carrying amount of long-term debt
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       4,137
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       4,112
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 27pt"&gt;
       Less: Current portion of long-term debt
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       (11
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       )
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 1px solid #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Carrying amount of long-term debt, excluding current portion
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#160;4,126
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#160;4,112
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="font-size: 1pt"&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 3px double #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 3px double #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 3px double #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td style="border-top: 3px double #000000"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 0%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div style="font-size: 1pt; margin-left: 0%; width: 13%;  align: left; border-bottom: 1pt solid #000000"&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 3pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent; text-align: left"&gt;
   &lt;tr&gt;
       &lt;td width="1%"&gt;&lt;/td&gt;
       &lt;td width="1%"&gt;&lt;/td&gt;
       &lt;td width="98%"&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr&gt;
       &lt;td valign="top"&gt;
       &lt;font style="font-size: 8pt"&gt;&lt;sup style="font-size: 85%; vertical-align: top"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/td&gt;
       &lt;td&gt;&lt;/td&gt;
       &lt;td valign="bottom"&gt;
       &lt;font style="font-size: 8pt"&gt;Available borrowings under the
       Revolving Credit Facility were $983&amp;#160;million after
       reductions for outstanding letters of credit of $17&amp;#160;million
       at December&amp;#160;31, 2010 and $968&amp;#160;million after reductions
       for outstanding letters of credit of $32&amp;#160;million at
       December&amp;#160;31, 2009.
       &lt;/font&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Communications Revolving Credit Facility&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On October&amp;#160;23, 2009, L-3 Communications replaced its
       $1&amp;#160;billion Senior Credit Facility with a $1&amp;#160;billion
       three-year Revolving Credit Facility maturing on
       October&amp;#160;23, 2012. Borrowings under the new Revolving Credit
       Facility bear interest, at L-3 Communications&amp;#8217; option, at
       either (i)&amp;#160;a &amp;#8220;base rate&amp;#8221; equal to the higher of
       (a)&amp;#160;0.50% per annum above the latest federal funds rate,
       (b)&amp;#160;the Bank of America &amp;#8220;prime rate&amp;#8221; (as defined
       in the Revolving Credit Facility), and (c)&amp;#160;1.00% per annum
       above a &amp;#8220;LIBOR rate&amp;#8221; (as defined in the Revolving
       Credit Facility), plus a spread ranging from 1.25% to 3.00% per
       annum, or (ii)&amp;#160;a &amp;#8220;LIBOR rate&amp;#8221; (as defined in the
       Revolving Credit Facility) plus a spread ranging from 2.25% to
       4.00% per annum. The spread, in both cases, depends on L-3
       Communications&amp;#8217; debt rating at the time of determination.
       L-3 Communications pays: (1)&amp;#160;commitment fees calculated on
       the daily amounts of the available unused commitments at a rate
       ranging from 0.375% to 0.75% per annum, (2)&amp;#160;letter of
       credit fees ranging from 1.50% to 2.67% per annum for
       performance and commercial letters of credit and (3)&amp;#160;letter
       of credit fees ranging from 2.25% to 4.00% for financial letters
       of credit. The fee rate, in all cases, depends on L-3
       Communications&amp;#8217; debt rating at the time of determination.
       The debt rating is based on the credit ratings as determined by
       Standard&amp;#160;&amp;#038; Poor&amp;#8217;s Rating Services, Moody&amp;#8217;s
       Investors Service, Inc. and Fitch Ratings of L-3
       Communications&amp;#8217; non-credit enhanced senior, unsecured
       long-term debt.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Communications Senior Notes&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;2010 Debt
       Issuances and Redemptions&lt;/font&gt;&lt;/i&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On May&amp;#160;21, 2010, L-3 Communications issued
       $800&amp;#160;million in principal amount of 4.75%&amp;#160;Senior Notes
       that mature on July&amp;#160;15, 2020 (2020 Senior Notes) at a
       discount of $3&amp;#160;million. The discount was recorded as a
       reduction to the principal
   amount of the notes and will be amortized as interest expense
       over the term of the notes. The effective interest rate of the
       2020 Senior Notes is 4.79%. Interest on the 2020 Senior Notes is
       payable semi-annually on January 15 and July 15 of each year.
       The net cash proceeds from this offering amounted to
       approximately $790&amp;#160;million after deducting the discounts,
       commissions and estimated expenses, and were used, together with
       cash on hand, to redeem L-3 Communications&amp;#8217;
       $800&amp;#160;million in aggregate
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;1&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2014 and 2013 on June 21 and
       July&amp;#160;15, 2010, respectively. In connection with the
       redemption of the
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;1&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2014 and 2013, the Company recorded debt
       retirement charges of approximately $18&amp;#160;million
       ($11&amp;#160;million after income tax, or $0.10 per diluted share)
       during the year ended December&amp;#160;31, 2010.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;2009 Debt
       Issuances and Redemptions &lt;/font&gt;&lt;/i&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On October&amp;#160;2, 2009, L-3 Communications issued
       $1&amp;#160;billion in aggregate principal amount of
       5.20%&amp;#160;Senior Notes due October&amp;#160;15, 2019 (2019 Senior
       Notes) at a discount of $4&amp;#160;million. The discount was
       recorded as a reduction to the principal amount of the notes and
       will be amortized as an interest expense over the term of the
       notes. The effective interest rate of the 2019 Senior Notes is
       5.25%. Interest on the 2019 Senior Notes is payable
       semi-annually on April 15 and October 15 of each year. The net
       cash proceeds from this offering amounted to approximately
       $987&amp;#160;million after deducting the discounts, commissions and
       estimated expenses, and were used, together with cash on hand,
       to redeem L-3 Communications&amp;#8217; $750&amp;#160;million
       7&lt;sup style="font-size: 85%; vertical-align: top"&gt;5&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due in 2012 (2002 Notes) on November&amp;#160;2,
       2009 and to repay L-3 Communications&amp;#8217; outstanding
       $650&amp;#160;million Term Loan on October&amp;#160;7, 2009. In
       connection with the redemption of the 2002 Notes, the Company
       recorded a debt retirement charge of approximately
       $10&amp;#160;million ($6&amp;#160;million after income tax).
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;2011 Debt
       Issuances and Redemptions&lt;/font&gt;&lt;/i&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On February&amp;#160;7, 2011, L-3 Communications issued
       $650&amp;#160;million in principal amount of 4.95%&amp;#160;Senior Notes
       that mature on February&amp;#160;15, 2021 (2021 Senior Notes) at a
       discount of $4&amp;#160;million. The discount was recorded as a
       reduction to the principal amount of the notes and will be
       amortized as interest expense over the term of the notes. The
       effective interest rate of the 2021 Senior Notes is 5.02%.
       Interest on the 2021 Senior Notes is payable semi-annually on
       February 15 and August 15 of each year. The net cash proceeds
       from this offering amounted to approximately $640&amp;#160;million
       after deducting the discounts, commissions and estimated
       expenses. We will use the net proceeds, together with cash on
       hand, to redeem L-3 Communications&amp;#8217; $650&amp;#160;million
       5&lt;sup style="font-size: 85%; vertical-align: top"&gt;7&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2015 (2015 Notes). The redemption price
       is 101.958% of the principal amount, plus accrued and unpaid
       interest up to, but not including, March&amp;#160;9, 2011, the
       redemption date. In connection with the redemption of the 2015
       Notes, the Company will record a debt retirement charge in the
       2011 first quarter of $18&amp;#160;million ($11&amp;#160;million after
       income tax, or $0.10 per diluted share).
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The 2019, 2020, and 2021 Senior Notes (collectively the Senior
       Notes) are unsecured senior obligations of L-3 Communications.
       The Senior Notes may be redeemed at any time prior to their
       maturity at the option of L-3 Communications, in whole or in
       part, at a redemption price equal to the greater of:
       (1)&amp;#160;100% of the principal amount, or (2)&amp;#160;the present
       value of the remaining principal and interest payments
       discounted to the date of redemption, on a semi-annual basis, at
       the Treasury Rate (as defined in the Indenture dated as of
       October&amp;#160;2, 2009 (the Senior Indenture)), plus 0.25% for the
       2020 and 2021 Senior Notes and 0.30% for the 2019 Senior Notes.
       Upon the occurrence of a change in control (as defined in the
       Senior Indenture), each holder of the notes will have the right
       to require L-3 Communications to repurchase all or any part of
       such holder&amp;#8217;s notes at an offer price in cash equal to 101%
       of the aggregate principle amount plus accrued and unpaid
       interest and special interest (as defined in the Senior
       Indenture), if any, to the date of the purchase.
   &lt;/div&gt;
   &lt;!-- XBRL Pagebreak Begin --&gt;
   &lt;/div&gt;
   &lt;!-- END PAGE WIDTH --&gt;
   &lt;!-- PAGEBREAK --&gt;
   &lt;div style="margin-left: 0%"&gt;
   &lt;!-- BEGIN PAGE WIDTH --&gt;
   &lt;div align="center" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
   &lt;b&gt;
   &lt;font style="font-family: 'Times New Roman', Times"&gt;
   &lt;/font&gt;
   &lt;/b&gt;
   &lt;/div&gt;
   &lt;!-- XBRL Pagebreak End --&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Communications Senior Subordinated Notes&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The Senior Subordinated Notes, which are included as components
       of long-term debt in the table above, are general unsecured
       obligations of L-3 Communications and are subordinated in right
       of payment to all existing and future senior debt of L-3
       Communications. The terms of each outstanding Senior
       Subordinated Note are presented in the table below.
   &lt;/div&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table border="0" width="100%" align="center" cellpadding="0" cellspacing="0" style="font-size: 8pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent; text-align: left"&gt;
   &lt;!-- Table Width Row BEGIN --&gt;
   &lt;tr style="font-size: 1pt" valign="bottom"&gt;
       &lt;td width="37%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=01 type=maindata --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=lead --&gt;
       &lt;td width="12%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=lead --&gt;
       &lt;td width="3%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=04 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=04 type=lead --&gt;
       &lt;td width="5%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=04 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=04 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=05 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=05 type=lead --&gt;
       &lt;td width="3%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=05 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=05 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=06 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=06 type=lead --&gt;
       &lt;td width="3%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=06 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=06 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=07 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=07 type=lead --&gt;
       &lt;td width="11%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=07 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=07 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=08 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=08 type=lead --&gt;
       &lt;td width="5%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=08 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=08 type=hang1 --&gt;
   &lt;/tr&gt;
   &lt;!-- Table Width Row END --&gt;
   &lt;!-- TableOutputHead --&gt;
   &lt;tr style="font-size: 7pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Net&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Effective&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Redemption&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 7pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Amount&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Cash&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Interest&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;Price % of&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 7pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Note&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Date of Issuance&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Issued&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Discount&lt;sup style="font-size: 85%; vertical-align: top"&gt;(1)&lt;/sup&gt;&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Proceeds&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Rate&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Current Call
       Date&lt;sup style="font-size: 85%; vertical-align: top"&gt;(2)&lt;/sup&gt;&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;Principal&lt;sup style="font-size: 85%; vertical-align: top"&gt;(3)&lt;/sup&gt;&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 7pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="10" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;(in millions)&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;!-- TableOutputBody --&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -8pt; margin-left: 8pt"&gt;
       5&lt;sup style="font-size: 85%; vertical-align: top"&gt;7&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due January&amp;#160;15,
       2015&lt;sup style="font-size: 85%; vertical-align: top"&gt;(4)&lt;/sup&gt;
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       November 12, 2004
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       650
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#8212;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       639
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       5.875
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       %
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       January 15, 2011
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       101.958
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       %
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -8pt; margin-left: 8pt"&gt;
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;3&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due October&amp;#160;15, 2015
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       July 29, 2005
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       1,000
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       9
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       972
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       6.470
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       %
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       October 15, 2010
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       103.188
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       %
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 0%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div style="font-size: 1pt; margin-left: 0%; width: 13%;  align: left; border-bottom: 1pt solid #000000"&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 3pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent; text-align: left"&gt;
   &lt;tr&gt;
       &lt;td width="1%"&gt;&lt;/td&gt;
       &lt;td width="1%"&gt;&lt;/td&gt;
       &lt;td width="98%"&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr&gt;
       &lt;td valign="top"&gt;
       &lt;font style="font-size: 8pt"&gt;&lt;sup style="font-size: 85%; vertical-align: top"&gt;(1)&lt;/sup&gt;&lt;/font&gt;&lt;/td&gt;
       &lt;td&gt;&lt;/td&gt;
       &lt;td valign="bottom"&gt;
       &lt;font style="font-size: 8pt"&gt;Discounts are recorded as a
       reduction to the principal amount of the notes and are amortized
       as interest expense over the term of the notes.
       &lt;/font&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr&gt;
       &lt;td valign="top"&gt;
       &lt;font style="font-size: 8pt"&gt;&lt;sup style="font-size: 85%; vertical-align: top"&gt;(2)&lt;/sup&gt;&lt;/font&gt;&lt;/td&gt;
       &lt;td&gt;&lt;/td&gt;
       &lt;td valign="bottom"&gt;
       &lt;font style="font-size: 8pt"&gt;Notes are subject to redemption at
       any time, at the option of L-3 Communications, in whole or in
       part, on or after the call date.
       &lt;/font&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr&gt;
       &lt;td valign="top"&gt;
       &lt;font style="font-size: 8pt"&gt;&lt;sup style="font-size: 85%; vertical-align: top"&gt;(3)&lt;/sup&gt;&lt;/font&gt;&lt;font style="font-size: 8pt"&gt;
       &lt;/font&gt;&lt;/td&gt;
       &lt;td&gt;&lt;/td&gt;
       &lt;td valign="bottom"&gt;
       &lt;font style="font-size: 8pt"&gt;Redemption prices (plus accrued and
       unpaid interest) include a premium on the principal amount (plus
       accrued and unpaid interest). The prices above represent the
       current redemption prices, which decline annually to 100% of
       principal (plus accrued and unpaid interest) starting three
       years from the first allowable date of redemption, and
       thereafter.
       &lt;/font&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr&gt;
       &lt;td valign="top"&gt;
       &lt;font style="font-size: 8pt"&gt;&lt;sup style="font-size: 85%; vertical-align: top"&gt;(4)&lt;/sup&gt;&lt;/font&gt;&lt;/td&gt;
       &lt;td&gt;&lt;/td&gt;
       &lt;td valign="bottom"&gt;
       &lt;font style="font-size: 8pt"&gt;The 2015 Notes will be redeemed at
       a redemption price of 101.958% of the principal amount, plus
       accrued and unpaid interest up to, but not including,
       March&amp;#160;9, 2011, the redemption date.
       &lt;/font&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Holdings&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On July&amp;#160;29, 2005, L-3 Holdings sold $600&amp;#160;million of
       3%&amp;#160;Convertible Contingent Debt Securities (CODES) due
       August&amp;#160;1, 2035. Interest is payable semi-annually on
       February 1 and August 1 of each year. On August&amp;#160;4, 2005,
       L-3 Holdings sold an additional $100&amp;#160;million of CODES,
       pursuant to an over-allotment option exercised by the initial
       purchasers of the CODES. Effective January&amp;#160;1, 2009, the
       Company is separately accounting for the liability and equity
       (conversion option) components of the CODES in a manner that
       reflects the Company&amp;#8217;s non-convertible debt borrowing rate
       when interest expense is realized in accordance with the
       provisions of the accounting standard for convertible debt. The
       effective interest rate of the CODES is 6.33%. Interest expense
       relates to both the contractual coupon interest and amortization
       of the discount on the liability components. Interest expense
       recognized was $43&amp;#160;million and $42&amp;#160;million for the
       years ended December&amp;#160;31, 2010 and December&amp;#160;31, 2009,
       respectively. The following table provides additional
       information about the Company&amp;#8217;s CODES:
   &lt;/div&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table border="0" width="100%" align="center" cellpadding="0" cellspacing="0" style="font-size: 9pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent; text-align: left"&gt;
   &lt;!-- Table Width Row BEGIN --&gt;
   &lt;tr style="font-size: 1pt" valign="bottom"&gt;
       &lt;td width="72%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=01 type=maindata --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=lead --&gt;
       &lt;td width="11%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=02 type=hang1 --&gt;
       &lt;td width="1%"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=gutter --&gt;
       &lt;td width="1%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=lead --&gt;
       &lt;td width="11%" align="right"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=body --&gt;
       &lt;td width="1%" align="left"&gt;&amp;#160;&lt;/td&gt;&lt;!-- colindex=03 type=hang1 --&gt;
   &lt;/tr&gt;
   &lt;!-- Table Width Row END --&gt;
   &lt;!-- TableOutputHead --&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;December&amp;#160;31,&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom"&gt;
       &lt;b&gt;December&amp;#160;31,&lt;br /&gt;
       &lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;2010&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="2" nowrap="nowrap" align="center" valign="bottom" style="border-bottom: 1px solid #000000"&gt;
       &lt;b&gt;2009&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="font-size: 8pt" valign="bottom" align="center"&gt;
   &lt;td nowrap="nowrap" align="center" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td colspan="6" align="center" valign="bottom"&gt;
       &lt;b&gt;(in millions)&lt;/b&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 3pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;!-- TableOutputBody --&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Carrying amount of the equity component (conversion feature)
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       64
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       64
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Unamortized discount of liability component being amortized
       through February&amp;#160;1, 2011
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       2
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       24
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="bottom" style="background: #cceeff"&gt;
   &lt;td align="left" valign="bottom"&gt;
   &lt;div style="text-indent: -9pt; margin-left: 9pt"&gt;
       Net carrying amount of liability component
   &lt;/div&gt;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#160;&amp;#160;698
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
       $
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="right" valign="bottom"&gt;
       &amp;#160;&amp;#160;676
   &lt;/td&gt;
   &lt;td nowrap="nowrap" align="left" valign="bottom"&gt;
   &amp;#160;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 0%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The CODES are convertible into cash and shares of L-3
       Holdings&amp;#8217; common stock based on a conversion rate of
       10.1074&amp;#160;shares of L-3 Holdings common stock per one
       thousand dollars in principal amount of the CODES (equivalent to
       a conversion price of $98.94 per share) only under the following
       circumstances: (1)&amp;#160;prior to August&amp;#160;1, 2033, on any
       date during any fiscal quarter (and only during such fiscal
       quarter) beginning after September&amp;#160;30, 2005, if the closing
       sales price of the common stock of L-3 Holdings is more than
       120% of the then current conversion price (currently $118.73)
       for at least 20 trading days in the 30 consecutive
       &lt;font style="white-space: nowrap"&gt;trading-day&lt;/font&gt;
       period ending on the last trading day of the previous fiscal
       quarter; (2)&amp;#160;on or after August, 1, 2033, at all times on
       or after any date on which the closing sale price of the common
       stock of L-3 Holdings is more than 120% of the then current
       conversion price (currently $118.73); (3)&amp;#160;if we distribute
       to all holders of our common stock, rights or warrants (other
       than pursuant to a rights plan) entitling them to purchase, for
       a period of 45 calendar days or less, shares of L-3
       Holdings&amp;#8217; common stock at a price less than the average
       closing sales
   price for the ten trading days preceding the declaration date
       for such distribution; (4)&amp;#160;if we distribute to all holders
       of our common stock, cash and other assets, debt securities or
       rights to purchase L-3 Holdings&amp;#8217; securities (other than
       pursuant to a rights plan), which distribution has a per share
       value exceeding 10% of the closing sale price of L-3 Holdings
       common stock on the trading day preceding the declaration date
       for such distribution; (5)&amp;#160;during the five consecutive
       &lt;font style="white-space: nowrap"&gt;business-day&lt;/font&gt;
       period following any five consecutive
       &lt;font style="white-space: nowrap"&gt;trading-day&lt;/font&gt;
       period in which the average trading price of the CODES was less
       than 98% of the average of the closing sale price of L-3
       Holdings common stock during such five trading day period
       multiplied by the then current conversion rate; (6)&amp;#160;during
       a specified period if the CODES have been called for redemption;
       or (7)&amp;#160;during a specified period if a &amp;#8220;fundamental
       change&amp;#8221; (as such term is defined in the indenture governing
       the CODES) occurs. The conversion rate is subject to adjustments
       in certain circumstances set forth in the indenture governing
       the CODES. For the year ended December&amp;#160;31, 2010, the
       conversion feature of the CODES had no impact on diluted
       earnings per share (EPS) (see Note&amp;#160;16).
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       Upon conversion of the CODES, the settlement amount will be
       computed as follows: (1)&amp;#160;if L-3 Holdings elects to satisfy
       the entire conversion obligation in cash, L-3 Holdings will
       deliver to the holder for each one thousand dollars in principal
       amount of the CODES converted cash in an amount equal to the
       conversion value; or (2)&amp;#160;if L-3 Holdings elects to satisfy
       the conversion obligation in a combination of cash and common
       stock, L-3 Holdings will deliver to the holder for each one
       thousand dollars in principal amount of the CODES converted
       (x)&amp;#160;cash in an amount equal to (i)&amp;#160;the fixed dollar
       amount per one thousand dollars in principal amount of the CODES
       of the conversion obligation to be satisfied in cash specified
       in the notice regarding L-3 Holdings&amp;#8217; chosen method of
       settlement or, if lower, the conversion value, or (ii)&amp;#160;the
       percentage of the conversion obligation to be satisfied in cash
       specified in the notice regarding L-3 Holdings chosen method of
       settlement multiplied by the conversion value, as the case may
       be (the &amp;#8220;cash amount&amp;#8221;); provided that in either case
       the cash amount shall in no event be less than the lesser of
       (a)&amp;#160;the principal amount of the CODES converted and
       (b)&amp;#160;the conversion value; and (y)&amp;#160;a number of shares
       of common stock of L-3 Holdings for each of the 20 trading days
       in the conversion period equal to 1/20th&amp;#160;of (i)&amp;#160;the
       conversion rate then in effect minus (ii)&amp;#160;the quotient of
       the cash amount divided by the closing price of common stock of
       L-3 Holdings for that day (plus cash in lieu of fractional
       shares, if applicable).
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The CODES are senior unsecured obligations of L-3 Holdings and
       rank equal in right of payment with all existing and future
       senior indebtedness and senior to all future senior subordinated
       indebtedness of L-3 Holdings. The CODES are jointly and
       severally guaranteed on a senior subordinated basis by the
       existing and future domestic subsidiaries of L-3 Holdings that
       guarantee any other indebtedness of L-3 Holdings or any of its
       domestic subsidiaries.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       At any time on or after February&amp;#160;1, 2011, the CODES are
       subject to redemption at the option of L-3 Holdings, in whole or
       in part, at a cash redemption price (plus accrued and unpaid
       interest, including contingent interest and additional interest,
       if any) equal to 100% of the principal amount of the CODES.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       On February&amp;#160;2, 2011,
       &lt;font style="white-space: nowrap"&gt;L-3&lt;/font&gt; Holdings
       repurchased approximately $11&amp;#160;million of the CODES as a
       result of the exercise by the holders of their contractual right
       to require L-3 Holdings to repurchase their CODES. Holders of
       the remaining CODES may require L-3 Holdings to repurchase the
       CODES, in whole or in part, on February&amp;#160;1, 2016,
       February&amp;#160;1, 2021, February&amp;#160;1, 2026 and
       February&amp;#160;1, 2031 at a cash repurchase price equal to 100%
       of the principal amount of the CODES (plus accrued and unpaid
       interest, including contingent interest and additional interest,
       if any). In addition, holders of the CODES may require L-3
       Holdings to repurchase the CODES at a repurchase price equal to
       100% of the principal amount of the CODES (plus accrued and
       unpaid interest, including contingent interest and additional
       interest, if any) if a &amp;#8220;fundamental change&amp;#8221; occurs
       prior to maturity of the CODES. At December&amp;#160;31, 2010, the
       $11 million of repurchased CODES are classified as a current
       liability and the remaining $689&amp;#160;million principal amount
       of CODES are classified as long-term debt.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       Holders of the CODES have a right to receive contingent interest
       payments, which will be paid on the CODES during any six-month
       period commencing February&amp;#160;1, 2011 in which the trading
       price of the CODES for each of the five trading
   days ending on the second trading day preceding the first day of
       the applicable six-month interest period equals or exceeds 120%
       of the principal amount of the CODES. The contingent interest
       payable per one thousand dollars in principal amount of CODES
       will equal 0.25% of the average trading price of one thousand
       dollars in principal amount of CODES during the five trading
       days ending on the second trading day preceding the first day of
       the applicable six-month interest period. The contingent
       interest payment provision has been accounted for as an embedded
       derivative. The amount assigned to the embedded derivative is
       adjusted periodically through other income (expense) for changes
       in its fair value, if any.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;Guarantees&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Communications&lt;/font&gt;&lt;/i&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The borrowings under the Revolving Credit Facility are fully and
       unconditionally guaranteed by L-3 Holdings and by substantially
       all of the material wholly-owned domestic subsidiaries of L-3
       Communications on an unsecured senior basis. The payment of
       principal and premium, if any, and interest on the Senior Notes
       are fully and unconditionally guaranteed, on an unsecured senior
       basis, jointly and severally, by
       &lt;font style="white-space: nowrap"&gt;L-3&amp;#160;Communications&amp;#8217;&lt;/font&gt;
       material wholly-owned domestic subsidiaries that guarantee any
       of its other indebtedness. The payment of principal and premium,
       if any, and interest on the
       5&lt;sup style="font-size: 85%; vertical-align: top"&gt;7&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2015 and
       6&lt;sup style="font-size: 85%; vertical-align: top"&gt;3&lt;/sup&gt;/&lt;sub style="font-size: 85%; vertical-align: text-bottom"&gt;8&lt;/sub&gt;%&amp;#160;Senior
       Subordinated Notes due 2015 (collectively the Senior
       Subordinated Notes) are fully and unconditionally guaranteed, on
       an unsecured senior subordinated basis, jointly and severally,
       by L-3 Communications&amp;#8217; wholly-owned domestic subsidiaries
       that guarantee any of its other liabilities.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;L-3
       Holdings&lt;/font&gt;&lt;/i&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The payment of principal and premium, if any, and interest on
       the CODES are fully and unconditionally guaranteed, on an
       unsecured senior subordinated basis, jointly and severally, by
       L-3 Communications and its wholly-owned domestic subsidiaries
       that guarantee any of its other liabilities.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;Subordination&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The guarantees of the Revolving Credit Facility and the Senior
       Notes rank senior to the guarantees of the Senior Subordinated
       Notes and the CODES and rank pari passu with each other. The
       guarantees of the Senior Subordinated Notes and CODES rank pari
       passu with each other and are junior to the guarantees of the
       Revolving Credit Facility and Senior Notes.
   &lt;/div&gt;
   &lt;div style="margin-top: 12pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
       &lt;b&gt;&lt;i&gt;&lt;font style="font-family: 'Times New Roman', Times"&gt;Covenants&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;i&gt;Financial and other restrictive covenants.&lt;/i&gt;&amp;#160;The
       Revolving Credit Facility and Senior Subordinated Notes
       indentures contain financial and other restrictive covenants
       that limit, among other things, the ability of the subsidiaries
       of L-3 Communications to borrow additional funds, and the
       ability of L-3 Communications and its subsidiaries to incur
       liens, make investments, merge or consolidate, dispose of
       assets, pay dividends or repurchase its common stock. The
       Company&amp;#8217;s Revolving Credit Facility contains covenants that
       require that (1)&amp;#160;the Company&amp;#8217;s consolidated leverage
       ratio be less than or equal to 4.0 to 1.0; (2)&amp;#160;the
       Company&amp;#8217;s consolidated interest coverage ratio be greater
       than or equal to 3.0 to 1.0; and (3)&amp;#160;the Company&amp;#8217;s
       consolidated senior leverage ratio be less than or equal to 3.5
       to 1.0, in each case, as of the end of any fiscal quarter.
       Calculations of the financial covenants are to exclude, among
       other things, certain items such as impairment losses on
       goodwill or other intangible assets, non-cash gains or losses
       from discontinued operations, gains or losses in connection with
       asset dispositions, and gains or losses with respect to
       judgments or settlements in connection with litigation matters.
       As of December&amp;#160;31, 2010, the Company was in compliance with
       its financial and other restrictive covenants.
   &lt;/div&gt;
   &lt;!-- XBRL Pagebreak Begin --&gt;
   &lt;/div&gt;
   &lt;!-- END PAGE WIDTH --&gt;
   &lt;!-- PAGEBREAK --&gt;
   &lt;div style="margin-left: 0%"&gt;
   &lt;!-- BEGIN PAGE WIDTH --&gt;
   &lt;div align="center" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: transparent"&gt;
   &lt;b&gt;
   &lt;font style="font-family: 'Times New Roman', Times"&gt;
   &lt;/font&gt;
   &lt;/b&gt;
   &lt;/div&gt;
   &lt;!-- XBRL Pagebreak End --&gt;
   &lt;div style="margin-top: 6pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The Senior Indenture contains covenants customary for investment
       grade notes, including covenants that restrict the ability of
       L-3 Communications and its wholly-owned domestic subsidiaries to
       create, incur, assume or permit to exist any lien, except
       permitted liens (as defined in the Senior Indenture) and
       restrict the ability of L-3 Communications and its subsidiaries
       to enter into certain sale and leaseback transactions (as
       defined in the Senior Indenture).
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The Senior Subordinated Notes indentures contain covenants that
       restrict the ability of L-3 Communications to incur indebtedness
       and issue capital stock that matures or is redeemable
       91&amp;#160;days or less after the maturity date of such series of
       notes, and the ability of its restricted subsidiaries to incur
       indebtedness or issue preferred stock, unless the Company&amp;#8217;s
       fixed charge coverage ratio would have been at least 2.0 to 1.0
       on a pro forma basis. The covenants are subject to several
       material exceptions, including an exception for indebtedness
       under the Company&amp;#8217;s credit facilities up to a specified
       amount.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;i&gt;Restricted Payments.&lt;/i&gt;&amp;#160;L-3 Holdings relies on
       dividends paid by L-3 Communications to generate the funds
       necessary to pay dividends on and repurchase its common stock.
       The Revolving Credit Facility contains provisions that limit the
       ability of L-3 Communications to pay dividends, repurchase L-3
       Holdings&amp;#8217; common stock or other distributions with respect
       to any capital stock and make investments in L-3 Holdings.
       However, the Revolving Credit Facility permits L-3
       Communications to:
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;table width="100%" border="0" cellpadding="0" cellspacing="0" style="text-align: left"&gt;
   &lt;tr&gt;
       &lt;td width="1%"&gt;&lt;/td&gt;
       &lt;td width="2%"&gt;&lt;/td&gt;
       &lt;td width="97%"&gt;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="top" style="font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;    &amp;#8226;&amp;#160;
   &lt;/td&gt;
       &lt;td align="left"&gt;
       fund payments of interest on indebtedness of L-3 Holdings and to
       fund payments of dividends on disqualified preferred stock
       issued by L-3 Holdings, so long as (1)&amp;#160;any such
       indebtedness or disqualified preferred stock is guaranteed by
       L-3 Communications and (2)&amp;#160;the proceeds received by L-3
       Holdings from the issuance of such indebtedness or disqualified
       preferred stock have been invested by L-3 Holdings in L-3
       Communications;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 10pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="top" style="font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;    &amp;#8226;&amp;#160;
   &lt;/td&gt;
       &lt;td align="left"&gt;
       fund payments and prepayments of principal of indebtedness of
       L-3 Holdings and to fund optional and mandatory redemptions of
       disqualified preferred stock issued by L-3 Holdings, so long as
       (1)&amp;#160;any such indebtedness or disqualified preferred stock
       is guaranteed by L-3 Communications and (2)&amp;#160;the amount of
       such fundings does not exceed the sum of (a)&amp;#160;the aggregate
       amount of investments made by L-3 Holdings in L-3 Communications
       with the proceeds from any issuance of indebtedness or
       disqualified preferred stock by L-3 Holdings that is guaranteed
       by
       &lt;font style="white-space: nowrap"&gt;L-3&amp;#160;Communications&lt;/font&gt;
       and (b)&amp;#160;the amount of any premium, penalty, or accreted
       value payable in connection with such payment, prepayment or
       redemption;
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr style="line-height: 10pt; font-size: 1pt"&gt;
   &lt;td&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
   &lt;tr valign="top" style="font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;    &amp;#8226;&amp;#160;
   &lt;/td&gt;
       &lt;td align="left"&gt;
       pay other dividends on and make other redemptions of its equity
       interests (including for the benefit of L-3 Holdings) and make
       other investments in L-3 Holdings, so long as no default or
       event of default has occurred and is continuing, up to an
       aggregate amount of $2.0&amp;#160;billion, increased (or decreased)
       on a cumulative basis at the end of each quarter, commencing
       with the quarter ended December&amp;#160;31, 2009 by an amount equal
       to 50% of the consolidated net income (or deficit) of L-3
       Communications for the quarter, plus (1)&amp;#160;100% of the
       proceeds from any issuance of capital stock (other than
       disqualified preferred stock) by L-3 Holdings after
       October&amp;#160;23, 2009, provided those proceeds were invested in
       L-3 Communications, plus (2)&amp;#160;100% of the proceeds from any
       issuance of indebtedness or disqualified preferred stock by L-3
       Holdings after October&amp;#160;23, 2009 provided those proceeds
       were invested in L-3 Communications and the indebtedness or
       disqualified preferred stock is not guaranteed by L-3
       Communications, plus (3)&amp;#160;100% of the proceeds from any
       issuance of capital stock (other than disqualified preferred
       stock) by
       &lt;font style="white-space: nowrap"&gt;L-3&amp;#160;Communications&lt;/font&gt;
       after October&amp;#160;23, 2009.
   &lt;/td&gt;
   &lt;/tr&gt;
   &lt;/table&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       Disqualified preferred stock discussed above is stock, other
       than common stock, that is not classified as a component of
       shareholders&amp;#8217; equity on the balance sheet. At
       December&amp;#160;31, 2010, L-3 Holdings and L-3 Communications did
       not have any disqualified preferred stock.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       The Senior Subordinated Notes indentures contain provisions that
       limit the ability of L-3 Communications to pay dividends to L-3
       Holdings and make investments in L-3 Holdings, subject to
       exceptions. Subject to certain limitations, the
   indentures permit L-3 Communications to make such restricted
       payments so long as it would be able to incur at least one
       dollar of additional indebtedness under the fixed charge
       coverage ratio test described above and meet other conditions.
   &lt;/div&gt;
   &lt;div style="margin-top: 10pt; font-size: 1pt"&gt;&amp;#160;
   &lt;/div&gt;
   &lt;div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 1%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: transparent"&gt;
       &lt;i&gt;Cross default provisions.&lt;/i&gt;&amp;#160;The Revolving Credit
       Facility contains cross default provisions that are triggered
       when a payment default occurs or certain other defaults occur
       that would allow the acceleration of indebtedness, swap
       contracts or guarantees of L-3 Holdings, L-3 Communications or
       its subsidiaries, so long as the aggregate amount of such
       indebtedness, swap contracts or guarantees is at least
       $50&amp;#160;million and such defaults (other than payment defaults
       and defaults that have resulted in acceleration) have not been
       cured within 10&amp;#160;days. The Senior Subordinated Notes
       indentures contain cross acceleration provisions that are
       triggered when holders of the indebtedness of L-3 Holdings,
       &lt;font style="white-space: nowrap"&gt;L-3&amp;#160;Communications&lt;/font&gt;
       or their restricted subsidiaries (or the payment of which is
       guaranteed by such entities) accelerate at least
       $10&amp;#160;million in aggregate principal amount of those
       obligations. The Senior Notes indenture contains a cross
       acceleration provision that is triggered when a default or
       acceleration occurs under any indenture or instrument of L-3
       Communications or its subsidiaries or the payment of which is
       guaranteed by L-3 Communications or its subsidiaries in an
       aggregate amount of at least $100&amp;#160;million.
   &lt;/div&gt;
   &lt;/div&gt;
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 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
 -Section 02
 -Paragraph 19, 20, 22
 -Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 129
 -Paragraph 2, 4

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