The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the repair and modification of air temperature controllers, identified by part number E601000000-1 and NSN 1680-01-501-5002. This procurement is a sole source requirement, necessitating that all proposals include data as outlined in the NAVSUP WSS Source Approval Brochure, as the government does not possess sufficient data to contract with other sources. The successful contractor will be responsible for ensuring that the items are returned to a Ready for Issue (RFI) condition, adhering to strict quality and inspection standards. Interested parties should direct inquiries to Alexis Healy at alexis.k.healy.civ@us.navy.mil, and proposals must remain valid for a minimum of 120 days following submission.