The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support MECH, is seeking proposals for the procurement of five circuit card assemblies, identified by NSN 7H-5998-013304809. The government intends to solicit and negotiate with only one source due to the unique nature of the required supplies, which are critical for military applications and cannot be economically reverse-engineered or sourced from additional suppliers. Interested parties are encouraged to express their interest and capability to meet the requirements within 45 days of this notice, with all inquiries directed to Leigh E. Catchings at (717) 605-2864 or via email at leigh.catchings@navy.mil.