The Defense Logistics Agency (DLA) hereby issues this Request for Proposal (RFP), Solicitation No. SPRRA2-26-R-0072, for the addition of fifteen (15) National Stock Numbers (NSNs)/Part Numbers(PNs) to the existing Indefinite Delivery Requirements (IDR) Long-Term Contract (LTC), Contract No. SPRRA2-25-D-0016, hereinafter referred to as the Alpha VI Contract. The Alpha VI Contract was awarded on September 26, 2025, as a subsumable contract under Raytheon Technologies Corporation's Umbrella Contract No. SPRBL1-25-D-0006, awarded on August 1, 2025. This contract superseded the prior Depot Level Repairable (DLR) contract, SPRBL1-15-D-0017 (Alpha V). The requirements associated with this solicitation are identified in Enclosure 1, Identification of Requirements (IOR), which details the fifteen (15) NSNs/PNs included in this procurement. These requirements support the Patriot Missile System and other critical defense systems. The terms and conditions of Umbrella Contract No. SPRBL1-25-D-0006 and the Alpha VI Contract No. SPRRA2-25-D-0016 shall govern the rights and obligations of both the Government and the Contractor. This solicitation is issued on a sole-source basis to Raytheon Company (CAGE 05716) pursuant to 10 U.S.C. § 3204(a)(1) and FAR 6.302-1, as only one responsible source is capable of satisfying the Government's requirements.