Anteon Awarded $26.9M Contract from U.S. Navy Space and Naval Warfare Command; Provides Program Management and Engineering Services Support to SPAWAR Airborne Networking & Integration International Program Office.

FAIRFAX, Va. -- Anteon International Corporation (NYSE:ANT), a leading information technology, systems integration and engineering services company, today announced that it has been awarded a contract by the U.S. Navy Space and Naval Warfare Systems Command (SPAWAR) PEOC4I & Space. Anteon will provide engineering and program support for the Program Management Warfare (PMW) 780 Airborne Networking & Integration International Program Office. The estimated value of this contract, if all options are exercised, is $26.9 million over a five year period of performance.

"Anteon is a premier prime contractor supporting SPAWAR at headquarters and around the world. We have an experienced team of professionals that understands and delivers upon the PMW 780 mission," stated Dan Johnson, Anteon chief operating officer. "Anteon is delivering mission critical program management, systems engineering and logistical support for this major PEOC4I & Space program."

The contract work will be conducted both at SPAWAR Command Headquarters in San Diego, CA, PMW 780 and various locations around the world. Anteon will provide engineering and program management support, as well as acquisition and system engineering support to the Multifunction Information Distribution System (MIDS), Low Volume Terminal (LVT) and MIDS Joint Tactical Radio Systems (JTRS), and other customers within the PMW 780 office. The Anteon team will also provide platform integration, data management, and database development.

About Anteon

Anteon, headquartered in Fairfax, Virginia, is a leading information technology company serving the U.S. Federal government and international customers. Anteon designs, integrates, maintains, and upgrades state-of-the-art systems for national defense, intelligence, homeland security, and other high priority government missions. Anteon provides numerous government clients with the systems integration, strategy and program management, systems engineering, operations services, and simulation and training skills necessary to manage the development and operations of their mission critical systems. The Company was founded in 1976 and currently employs over 9,500 employees in more than 100 offices worldwide. Anteon consistently ranks among the top information technology integrators based on independent surveys, and has been named to the Forbes List of the 400 Best Big Companies in 2005, earning distinction on the Forbes Platinum List. Anteon is listed on the Standards & Poor's MidCap 400 Index. For more information, visit www.anteon.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995:

The statements contained in this release which are not historical facts are forward-looking statements that are subject to risks and uncertainties that could cause actual results to differ materially from those set forth in, or implied by, forward-looking statements. The Company has tried, whenever possible, to identify these forward-looking statements using words such as "projects," "anticipates," "believes," "estimates," "expects," "plans," "intends," and similar expressions. Similarly, statements herein that describe the Company's business strategy, outlook, objectives, plans, intentions or goals are also forward-looking statements. The risks and uncertainties involving forward- looking statements include the Company's dependence on continued funding of U.S. government programs, government contract procurement and termination risks, including risks associated with bid protests, and other risks described in the Company's Securities and Exchange Commission filings. These statements reflect the Company's current beliefs and are based upon information currently available to it. Be advised that developments subsequent to this release are likely to cause these statements to become outdated with the passage of time. The Company does not currently intend, however, to update the guidance provided today prior to its next earnings release.