King of Prussia  (12) Philadelphia  (4) Pittsburgh  (3) Canonsburg  (1) Chesterbrook  (1) Ridley Park  (1) Saint Lawrence  (1)

Lockheed Martin  (11) General Dynamics Mission Systems  (3) Noblis  (3) Boeing Defense Systems  (1) Contact Government Services  (1) Arcfield  (1) Carnegie Mellon University's Software Engineering Institute  (1) CAE USA Inc.  (1) CACI  (1)