The Department of Defense, through the Defense Logistics Agency, is seeking proposals for the procurement of F-100 Tube Assembly, Metal, designated as a Critical Safety Item. The requirement includes a total of 12 units, with an estimated Request for Proposal (RFP) issue date of September 5, 2025, and a close date of October 6, 2025, for delivery by December 31, 2026. This assembly is crucial for aircraft engine operations, and the government intends to negotiate with a limited number of sources, primarily RTX Corporation, due to the specialized nature of the item. Interested parties should direct inquiries to Jeremy Bryant at jeremy.bryant@us.af.mil or call 405-855-7112, and all proposals submitted within 45 days will be considered.