The Department of Defense, specifically the Department of the Navy, is seeking proposals for the repair and modification of a reactor, identified by NSN 7H-5950-014382605, with a total quantity of five units required. The procurement is a total small business set-aside, emphasizing the need for interested parties to demonstrate their capability to fulfill the requirements, as the government intends to negotiate with only one source under FAR 6.302-1 due to the lack of available data for competitive procurement. This reactor is critical for military applications, and the delivery locations include DLA Distribution in New Cumberland, PA, and DLA Distribution San Joaquin in Tracy, CA. Interested vendors should contact Christian D. Spangenberg at (717) 605-5192 or via email at CHRISTIAN.SPANGENBERG@NAVY.MIL for further details, with proposals due within 45 days of the notice publication.