The Department of Defense, through the Naval Air Systems Command (NAVAIR), intends to award a sole source Indefinite Delivery Indefinite Quantity (IDIQ) contract to Rolls Royce Corporation, LLC for contractor logistics support (CLS) for the F-405 engine from FY27 to FY32. This procurement encompasses all Intermediate (I)-level and Depot (D)-level maintenance and logistics support for the F405-RR-401 engine and MK II Gas Turbine Starter (GTS) used in the T-45 Goshawk aircraft, which is critical for the Naval Undergraduate Training Systems Program Office. The contract will be executed primarily at NAS Kingsville, TX, with additional efforts at NAS Meridian, MS, and NAS Pensacola, FL, among other locations, and is justified under FAR 6.302-1 due to Rolls Royce being the sole manufacturer with the necessary technical data and expertise. Interested parties may express their capabilities to the primary contact, Ronald Parry, at ronald.r.parry.mil@us.navy.mil, prior to the closing date of the synopsis, although no competitive proposals will be solicited.