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 synthesizer, identified by NSN 7R-5895-011629391-GL, with a quantity of 129 units required. This procurement is critical as the item is flight critical, 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 documentation for source approval, as the government intends to negotiate with only one source under FAR 6.302-1. Proposals must be submitted within 45 days of the notice, and interested parties can contact Alyssa T. Thieu at (215) 697-0169 or via email at alyssa.thieu@navy.mil for further information.