The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a sequential timer, identified by NSN 7R-6645-014771140-KB, with a quantity of 16 units required for delivery FOB origin. This procurement is critical as the item is flight critical, and the Government does not possess the necessary data or rights to purchase or contract repair from additional sources, making it uneconomical to reverse engineer. Interested vendors must be approved sources and are required to submit specific documentation for source approval along with their proposals, as offers lacking the necessary data will not be considered. For further inquiries, Alyssa T. Thieu can be contacted at (215) 697-0169 or via email at ALYSSA.T.THIEU.CIV@US.NAVY.MIL, with proposals due within 45 days of the notice publication.