The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of circuit breakers, identified by NSN 7R-5925-015378655-KB, with a quantity of 15 units required. This procurement is critical as the circuit breakers are flight critical components, necessitating engineering source approval from the design control activity to ensure quality and compliance with military standards. Interested vendors must be approved sources or provide detailed qualifications for approval, as the government intends to negotiate with only one source under FAR 6.302-1, with proposals due within 45 days of this notice. For further inquiries, interested parties can contact Michael J. Zuccarini at (215) 697-1106 or via email at MICHAEL.J.ZUCCARINI.CIV@US.NAVY.MIL.