The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the repair and modification of a modulating valve, AI, under a sole source requirement. The procurement involves the repair, testing, and inspection of the specified item, which is critical for maintaining operational readiness in military aircraft systems. Interested contractors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Brochure, as the government does not possess sufficient data to contract with any source other than the current approved supplier. Proposals must be submitted within 120 days of the solicitation, and inquiries can be directed to Alexis Healy at 215-697-1143 or via email at alexis.healy@navy.mil.