This opportunity is for the acquisition or repair of a single unit of NSN 7R-1720-012857190-EY, which involves militarily sensitive technology and is restricted to government-approved sources. Only sources previously approved by the government have been solicited, and new source approval cannot delay the award. Prospective bidders who are not approved sources must submit detailed information as outlined in the NAVSUP WSS Source Approval Brochure with their proposal. Delivery is FOB origin, and the government intends to negotiate with only one source under FAR 6.302-1. All responsible sources may submit capability statements or proposals for consideration.