CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Current assets:
Cash and cash equivalents	$ 51.6	$ 49.0
Restricted cash	5.3	5.5
Accounts receivable, net	281.8	271.9
Inventoried costs	88.2	94.3
Prepaid expenses	18.0	17.4
Other current assets	10.2	17.3
Total current assets	455.1	455.4
Property, plant and equipment, net	84.0	85.6
Goodwill	596.4	596.4
Intangible assets, net	96.8	106.1
Other assets	38.3	40.4
Total assets	1,270.6	1,283.9
Current liabilities:
Accounts payable	71.6	83.6
Accrued expenses	41.7	46.4
Accrued compensation	43.4	47.8
Accrued interest	21.7	6.3
Billings in excess of costs and earnings on uncompleted contracts	48.4	43.7
Deferred income tax liability	29.0	28.9
Other current liabilities	19.8	22.1
Total current liabilities	275.6	278.8
Long-term debt principal, net of current portion	629.5	629.7
Long-term debt premium	17.7	18.7
Other long-term liabilities	32.2	32.6
Total liabilities	955.0	959.8
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at December 30, 2012 and March 31, 2013	0	0
Common stock, $0.001 par value, 195,000,000 shares authorized; 56,613,024 and 56,654,577 shares issued and outstanding at December 30, 2012 and March 31, 2013, respectively	0	0
Additional paid-in capital	848.8	847.1
Accumulated other comprehensive loss	(0.7)	(0.8)
Accumulated deficit	(532.5)	(522.2)
Total stockholders' equity	315.6	324.1
Total liabilities and stockholders’ equity	$ 1,270.6	$ 1,283.9