Defense Supply Center Philadelphia, Attn: DSCP-FO, Building 6, 700 Robbins Avenue, Philadelphia, PA 19111-5092

42 -- DISC, BREATHING VALVE SOL SP0100-99-R-4081 POC loretta cicirello 215-737-3162 This is a modification to a previously advertised acquisition. The changes are as follows: the quantity has been increased by 20,000 each. with no options, (procurement quantity is now 30,977 each) A additional part number has been added -- P/N SK-081 -- HANSEN ENTERPRISES' PART NUMBER (approved). This part number is in addition to the two other part numbers cited in the previously advertised notice. tentative issue date: 12-6-99 with a tentative closing date of 1-6-2000. Posted 12/01/99 (W-SN404895). (0335)

Loren Data Corp. http://www.ld.com (SYN# 0160 19991203\42-0001.SOL)