EX-21 18 dex21.htm EXHIBIT 21 Prepared by R.R. Donnelley Financial -- Exhibit 21
 
EXHIBIT 21
 
SUBSIDIARIES OF THE COMPANY
 
Name of Subsidiary
   
State of Incorporation
Advanced Biosystems, Inc.
   
Delaware
Analex Corporation
   
Delaware
SyCom Services, Inc.
   
Delaware
Vail Research and Technology Corporation (inactive)
   
Maryland