Eglin AFB Triangle Overflight 1989

On March 7, 1989, a massive equilateral triangular craft was observed over Eglin Air Force Base, Florida — the world's largest Air Force base and home to classified weapons testing ranges. Security police at the outer perimeter were the first to report the craft hovering at approximately 1,000 feet altitude over the restricted ROAD range complex. Eglin ATC tracked the object on radar and scrambled two F-15C Eagles from the 33rd Fighter Wing. As the F-15s approached, both pilots reported simultaneous communications failures, ECM system anomalies, and complete radar lock failure on the object. The craft appeared to have a flat black matte surface with no visible structural features and was estimated at 400–600 feet per side. After 35 minutes it departed vertically at extreme speed, leaving no sonic boom, no heat signature on FLIR, and no engine exhaust. The incident was classified at the highest level under Air Force Instruction 10-206 and is cited in researcher notes from declassified AATIP files as evidence of advanced electrooptical countermeasure capability.