2007 Top 100

31: ManTech International Corp.
Top 100 Revenue: $646,140,000
Defense Revenue: $613,833,000
Civilian Revenue: $32,307,000
2006 Revenue: $1.1 billion
2006 Earnings: $50.7 million
2005 Revenue: $980 million
2005 Earnings: $53.2 million
Number of employees: 5600
Headquarters: Fairfax, Va.
Website: www.mantech.com
Leadership: George J. Pederson, chairman and CEO and Robert A. Coleman, president and COO
Ticker: MANT
Lines of business: Secure systems and infrastructure, information technology and systems engineering
Major customers: Army, Navy, U.S. Agency for International Development, Defense Department and Homeland Security
Major contracts/projects: ManTech is a subcontractor on the $4 billion U.S. Army Infrastructure Modernization program. The 10-year IDIQ contract supplies telecommunications and support to government and military agencies around the world, including switching and networking technologies, installation and support services and logistics. The company also supports a Defense Department group''s interagency anti-terrorism missions, which include research and development. The contract is worth $89 million.