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 power supply, identified by NSN 7R-6130-010303840-LC. The procurement involves a quantity of three units, with delivery terms set to FOB Origin, and requires Government source approval prior to contract award due to the flight-critical nature of the item and insufficient technical data for open competition. Interested vendors must submit detailed technical data and source approval information as outlined in the NAVSUP WSS Source Approval Information Brochures, with proposals due within 45 days of this notice. For further inquiries, interested parties can contact Dina M. Wojciechowski at (215) 697-1219 or via email at DINA.M.WOJCIECHOWSKI.CIV@US.NAVY.MIL.