This is a presolicitation notice to identify qualified sources for engineering support for the Variable Stability In-Flight Simulator and Test Aircraft (VISTA) airframe, covering fiscal years 2027 through 2032. The work will support the United States Air Force Test Pilot School at Edwards Air Force Base, California, including curriculum development, student projects, and fleet aircraft like the VISTA F-16. Services will be performed under individual task orders issued under an existing IDIQ contract. Interested vendors must submit a complete technical package demonstrating their capability, with responses due by 5:00 p.m. Pacific Time on 12 May 2026. No budget amount is specified, and no solicitation document exists for this notice.