The Naval Air Systems Command (NAVAIR), PMA–226, Adversary and Specialized Aircraft Program, Adversary F–5 Integrated Product Team (IPT), has a requirement to provide Technical Support for the Venom Software Suite and the GARMIN G3000 Integrated Avionics System on F–5N+/F+ aircraft and a System Integration Lab (SIL) to ensure sustainment and reliability. Venom and GARMIN are the primary safety and tactical software suites on Navy and Marine Corps F–5N+/F+ aircraft. Services include twelve–week development cycles for capabilities, software patches, regression testing, Information Assurance support, facilitation of Technical Interchange Meetings, GARMIN Database and account management, SIL maintenance and testing, and support for ground/flight test events for software builds. Due to the proprietary nature and limited data rights, these requirements may only be met by the OEM, L3Harris ForceX Inc. NAVAIR is issuing this sources sought to determine if other sources can satisfy requirements in accordance with FAR 6.302–1. Interested vendors must submit a capability statement detailing abilities, company information, and relevant experience by 23 February 2026 at 2:00 PM EDT. This is a sources sought; it does not commit the government to a contract.