The Department of Defense, through the Naval Air Systems Command (NAVAIR), intends to issue a modification to the existing Sustaining Engineering and Support (SES) IV Contract, specifically for Northrop Grumman Systems Corporation (NGSC), to enhance aircrew support for the Triton MQ-4C Unmanned Aircraft Systems (UAS) for both the Royal Australian Air Force and the United States Navy. This anticipated Cost-Plus-Fixed-Fee (CPFF) contract modification will provide additional Integrated Test Team (ITT) aircrew support, leveraging NGSC's unique expertise as the sole designer and manufacturer of the Triton systems. The modification is being pursued on a sole source basis under the authority of 10 U.S.C. 3204 (a)(1), emphasizing the critical nature of NGSC's knowledge in the design, operation, and maintenance of the Triton. Interested parties can direct inquiries to Suresh Jafar at suresh.jafar.civ@us.navy.mil, noting that no formal request for proposals is currently available and the Government is not obligated to issue any solicitations or awards.