11th Contracting Squadron, 110 Luke Ave, Room 200, Bolling AFB, DC 20332-0305

B -- ANALYSIS SUPPORT SERVICES FOR AIR DEFENSE SMULATION AND MISSION LEVEL MODELING SOL F4964298R4AFS DUE 062498 POC Paulette Creighton, Contract Specialist, Or Janice McConaha, Contracting Officer at (202)767-7938 The above solicitation number F49642-98-R-4AFS, entitled " Analysis Support services for Air Defense Simulation and Mission Level Modeling" is modified to correct the due date of response for proposal and to correct the level of the required security clearance. The following is the corrected information: 1. Due date of proposal response is June 24, 1998 at 3:30 p.m. est. 2. Top-Secrect is required versus Secret. (0163)

Loren Data Corp. http://www.ld.com (SYN# 0014 19980616\B-0004.SOL)