The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of circuit card assemblies, identified by NSN 7R-5998-013123188-EY, with a quantity of four units required for delivery FOB origin. This procurement is critical as the items are flight critical and require engineering source approval to ensure quality, necessitating that only approved sources are solicited for this contract. Interested parties must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with the primary contact for inquiries being Danielle M. Junod at danielle.m.junod.civ@us.navy.mil. The government intends to negotiate with only one source under FAR 6.302-1, emphasizing the importance of compliance with qualification requirements for award consideration.