RAF Lakenheath — Radar-Visual Chase, UK

On August 13–14, 1956, radar operators at RAF Bentwaters and RAF Lakenheath tracked an extraordinary series of aerial contacts over East Anglia. The event began at approximately 9:30 PM when a single object was tracked moving at 2,000–4,000 mph over the North Sea — a speed ruling out any 1956-era aircraft. The object stopped and held stationary position. A second phase involved multiple separate contacts appearing simultaneously. At approximately midnight, a USAF de Havilland Venom jet interceptor was vectored toward the primary contact. The pilot achieved brief visual contact with 'a whitish light fuzzy.' The ground controller directed the pilot onto the object; the controller then observed the radar return from the UAP move from ahead of the Venom to behind it. The pilot confirmed the object was now behind his aircraft. Despite violent evasive maneuvers, the object maintained position behind the Venom for 10 minutes. The pilot was eventually compelled to request guidance back to base; as he departed, the object departed in the opposite direction at high speed. The case was studied by the U.S. Air Force's Scientific Advisory Board and by Dr. J. Allen Hynek. A declassified USAF analysis in the 2026 NARA archive notes: 'The combined radar-visual evidence from multiple independent sources at Lakenheath meets no prosaic threshold.'