The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of the AC GCU-AC GEN, identified by NSN 7R-1680-016481656-RQ, with a quantity of 2 units required. This procurement is critical as the item is flight critical, necessitating Government source approval prior to contract award, and the technical data needed for competitive acquisition is not available. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with contact for inquiries directed to Michael J. Zuccarini at (215) 697-1106 or via email at MICHAEL.ZUCCARINI@NAVY.MIL.