This is a presolicitation notice for a potential sole-source, firm-fixed-price contract to Curtiss-Wright DS, Inc. for a BOSS software upgrade for Appendix Z messages. The Air Force is seeking information from other potentially qualified vendors who believe they can meet the requirement and must submit a complete technical package. Responses from vendors are due no later than 12:00 p.m. Pacific Daylight Time on May 1, 2026. The work pertains to software publishing under NAICS code 513210. The Air Force Test Center at Edwards AFB, California, is the contracting activity.