The Defense Logistics Agency (DLA) is issuing a sole-source Letter Request for Proposal (RFP) SPRRA2-26-R-0027 to Raytheon Company for the addition of two National Stock Numbers (NSNs) to an existing subsumable contract. This procurement is critical for supporting the Patriot Missile and other defense systems, emphasizing the necessity for specific parts that only Raytheon can provide under the terms of the contract. Interested parties must note that Raytheon is required to indicate their intention to submit a proposal within five business days and submit their full proposal by March 10, 2026, at 5:00 P.M. CST, adhering to the established terms and conditions of the Umbrella Contract. For further inquiries, the designated contacts include LeeAnn Darling at LeeAnn.Darling@dla.mil and Siyeicea S Jackson at SIYEICEA.JACKSON@DLA.MIL.