The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 66 units of a flight-critical fuel cell for aircraft, identified by NSN 7R-1560-015337187-V2. The procurement requires that the item be sourced from approved suppliers as specified in source control or selected item drawings, due to the lack of adequate technical data or government data rights for alternative sources. Interested vendors must provide comprehensive documentation for source approval along with their proposals, as offers lacking the necessary information will not be considered. For further inquiries, interested parties can contact Bridget M. Murphy at (215) 697-5047 or via email at BRIDGET.M.MURPHY6.CIV@US.NAVY.MIL.