This is a procurement for 43 aluminum alloy butterfly valves, used as fuel shut-offs for the F-16 aircraft, with deliveries scheduled between February 26, 2027, and October 26, 2027. The primary delivery destination is Tinker Air Force Base in Oklahoma. The notice states the government intends to solicit and negotiate with only one or a limited number of sources, specifically identifying Eaton Corporation as a qualified source. While not a formal request for competition, proposals received may be considered for determining whether to conduct a competitive procurement.