Defense Supply Center Richmond, 8000 Jefferson Davis Highway, Richmond, VA 23297-5000

61 -- SWITCHING UNIT, POWER TRA SOL SP0430-00-R-0388 DUE 012800 POC Kathleen McGrath/ZZ880/804-279-5732/Kreylon Crewe/804-279-4221, Contracting Officer This modification reflects a change in the issue and closing date. The new issue date is 29 Dec 99, the new closing date is 28 Jan 00. All other terms and conditions remain the same. Posted 12/21/99 (W-SN410561). (0355)

Loren Data Corp. http://www.ld.com (SYN# 0222 19991223\61-0001.SOL)