This is a FAR Part 13 spares buy, with early and incremental deliveries accepted and preferred. Items require government source approval before award; bidders who are not approved sources must include the information detailed in the NAVSUP WSS source approval brochure with their proposal or their offer will not be considered. If source approval cannot be processed in time or approval requirements prevent timely fulfillment, the award requirement may be continued based on fleet support needs. Quotes should be emailed to LARA.L.SZOTT.CIV@US.NAVY.MIL. Delivery orders and modifications are considered issued when mailed, faxed, or sent electronically, and the government’s acceptance of a contractor’s proposal constitutes a bilateral agreement to issue contractual documents as described.