ManTech International | Employs 3,600 locally
ManTech's network operations center in Chantilly supports federal government customers. ManTech provides information technology and technical support to national security agencies. In early 2010, the company purchased Red Bank, N.J.-based Sensor Technologies, an intelligence firm specializing in biometrics, human terrain systems and communications. Additionally, Lawrence B. Prior III, the company's president, left for BAE Systems, leading ManTech to reorganize its top management. The presidents of the company's three main divisions were also given the title chief operating officer.
Courtesy of ManTech International