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, which are flight critical and require Government source approval prior to contract award, as the available technical data is insufficient for open competition. Interested vendors must provide detailed technical data and experience documentation 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.