Alexandria, VA, December 21, 1998 -- HADRON, INC. (OTC Electronic Bulletin Board: HDRN) today announced it has completed the acquisition of Vail Research and Technology Corporation ("Vail"), a privately-held information technology firm based in Northern Virginia, for approximately $1.6 million. Vail will operate as a wholly-owned subsidiary of Hadron.

"The acquisition of Vail qualitatively enhances Hadron's position in the information technology market," said C.W. Gilluly, Hadron Chairman and Chief Executive Officer. "We are excited that Jeannine Vail and her staff have joined Hadron," he added.

Vail provides a comprehensive range of superior-quality professional and technical services to clients — including the U.S. Navy, Defense Advanced Research Projects Agency (DARPA), U.S. Army, U.S. Air Force, U.S. Special Operations Command, NASA, Department of Transportation, Department of Commerce, Department of Energy as well as private-sector firms. Vail has received much industry attention for its innovative approaches to solving complex customer challenges, including multiple "Fast 50 Awards" from Washington Technology and "INC. 500 Awards." Jeannine Vail was selected as the Washington Area Woman-Owned Business Entrepreneur of the Year for 1997.

Hadron is a leading information, management and technical services corporation, providing a broad range of technical services to businesses and federal government agencies. Hadron specializes in the areas of trusted/secure computer systems, computer systems support and intelligent weapons systems. Hadron can be found on the Internet at www.hadron.com