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-5998-002722649-BE and reference number 754774-1, with a quantity of four units required for delivery FOB origin. This procurement is critical as the item is flight critical, necessitating government source approval prior to contract award, and only previously approved sources will be solicited due to the lack of sufficient technical data for open competition. Interested vendors must submit detailed information as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with contact inquiries directed to Gina P. Sassane at gina.p.sassane.civ@us.navy.mil or by phone at (215) 697-2198.