The Government intends to negotiate with only one source for two units of the specified flight-critical item, delivered FOB origin. The item is commercial/nondevelopmental/off-the-shelf, and Government source approval is required before award; only previously approved sources have been solicited. New sources must submit the required source-approval documentation with their proposal per the applicable NAVSUP WSS brochure, and offers missing required data will not be considered; approval timing or Fleet support needs may allow award to proceed without a new-source approval. Interested responsible sources may identify their interest and capability or submit proposals, quotations, or capability statements, but this is not a request for competitive proposals and any decision not to compete is discretionary. Military and federal specifications, standards, QPLs, QPDs, and handbooks are available through DODSSP/ASSIST, with DODSSP document services located in Philadelphia, PA.