Sole source procurement for 25 units of an NSN item with delivery FOB origin and a requested repair turnaround time of 136 days. The item requires government source approval; only previously approved sources have been solicited, and new sources must submit the data required by the NAVSUP WSS Source Approval Information Brochure. The government intends to negotiate with only one source under FAR 6.302-1, but all responsible sources may express interest and submit capability statements or proposals. The technical data is not available to support competitive solicitation, and this is not a commercial item acquisition. Interested parties should review the source approval brochures and submit the required documentation with any proposal.