WHO'S ON FIRST
B>Edward Gerry has been appointed president and chief executive officer of SRS Technologies of Arlington, Va.
Elizabeth Tomaszewicz has been appointed president of ComSkill Learning Centers Inc., a wholly owned subsidiary of Herndon, Va.-based Industrial Training Corp.
McLean, Va.-based PRC has promoted Robert Waters to senior vice president for human resources.
Cable & Wireless Inc. of Vienna, Va., has promoted Ken Schwarz to vice president and general manager of personal communications services and William Wheeler to vice president and controller.
Rockville, Md.-based Computer Data Systems Inc. has named Thomas Green executive vice president, and James Reeves, Mike Bennof, Douglas Christianson and Michael Watkins vice presidents.
XDB of Laurel, Md., has hired Graham Smith as vice president of European operations and Kevin Horigan director of indirect channels.
Dynatech Communications Inc., based in Woodbridge, Va., has named Kerry Hawkins as its new vice president of North American Sales.
Intrafed of Bethesda, Md., named Curtis Abel vice president of federal sales.
Martin Marietta Services Group of Cherry Hill, N.J., has named Fred Lyssy vice president of enterprise integration services, Stanley J. Pryzby vice president of fleet combat systems services, Thomas Shafer vice president of computing and communications services and Beth Biddle program director for the EPA National Computing Center.
Eric Singleton has been named director of management information systems for AlliedSignal Technical Services Corp. of Columbia, Md., and George Stuehler has been named director of health information services.
Sysorex Information Systems of Fairfax, Va., has appointed Sandra Hardwick program manager for the company's Stamis computer contract with the U.S. Army.
Sherikon Inc. has named George Bowns manager of the engineering technology division and Robert Burton facility manager for precision metal products.
Thomas Zayatz has been named manager of marketing and sales of Innovative System Developers Inc.
Apex Environmental Inc. of Rockville, Md., has named Joe Beres senior environmental, safety and health specialist.
--Compiled by Ellen Moffett
Who's On First highlights promotions and new arrivals at high-tech companies in the Washington, marketplace. To include your company, send a press release, which may include a photograph (photos cannot be returned), to Who's On First Editor, Washington Technology, 8500 Leesburg Pike, Suite 7500, Vienna, Va. 22182; or Internet E-mail to email@example.com.