ANTEON COMPLETES ACQUISITION OF ANALYSIS & TECHNOLOGY INC.

FAIRFAX, Va.--(BUSINESS WIRE)--June 24, 1999--

Anteon Corporation today announced the completion of its acquisition of Analysis & Technology, Inc. Under the terms of the sale, Anteon has acquired for $26 per share, the approximately four million shares outstanding on a fully diluted basis. Analysis & Technology will operate as a wholly owned subsidiary of Anteon.

Analysis & Technology provides a full spectrum of engineering and information technology services to a diverse base of government and commercial customers. The company has more than 1700 employees and revenues at more than $170 million at fiscal year end March 31, 1999. With this acquisition, Anteon now has more than 4000 employees and an estimated annual revenue approaching $500 million.

A key customer for Analysis & Technology is the Department of Defense for which Analysis & Technology provides engineering, information technology and C4I services in a number of mission-critical programs.

Joseph M. Kampf, Anteon President and CEO stated, "This acquisition is a major step in implementing Anteon's strategy to become a multi-billion dollar company providing high quality information technology and engineering services to the marketplace. We are extremely excited that Analysis & Technology is now a member of "Team" Anteon. Our shared corporate values, complimentary technical skills and demonstrated commitment to customer satisfaction provide a sound foundation for continued success. We envision a very smooth transition process and have already identified business opportunities that we are now better positioned to pursue."

Gary P. Bennett, Chairman and CEO of Analysis & Technology said, "We too are excited about joining "Team" Anteon. We are successfully working all acquisition-related issues and are focused on maximizing the synergism of our joint capabilities. There is no doubt in my mind that we will be successful."

Anteon Corporation

Anteon Corporation, headquartered in Fairfax, Virginia, is a technology and engineering services company supporting the federal government and commercial sectors for the past 23 years. Anteon has more than 4,000 employees in 70 offices and more than 150 client sites worldwide. For more information, visit www.anteon.com.