The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of circuit card assemblies, specifically identified by NSN 7R-5998-016002538-GF. This procurement involves a quantity of four units and requires government source approval prior to contract award, as the items are flight critical and the technical data available does not support full and open competition. Interested vendors must provide detailed documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals lacking the necessary information will not be considered. For further inquiries, potential bidders can contact Svitlana Shvets at (215) 697-6278 or via email at SVITLANA.SHVETS.CIV@US.NAVY.MIL.