Pinecastle Air Force Base Sighting 1952

On February 27, 1952, a USAF B-29 Superfortress crew returning from a training mission to Pinecastle Air Force Base in Florida observed a large luminous disc executing aerobatic maneuvers in their vicinity. The aircraft commander and crew watched as the disc performed tight loops, instantaneous direction reversals, and then held a perfect stationary hover as the B-29 passed beneath it at 1,000 feet. Pinecastle tower operators confirmed the radar return. The disc was estimated at 60–80 feet in diameter with a metallic sheen and no visible propulsion. After pacing the B-29 for several minutes the disc executed a near-vertical departure, climbing to extreme altitude in under 10 seconds. The crew, experienced WWII veterans, filed a classified incident report under JANAP-146 protocols. Project Blue Book investigators rated the case 'unidentified' — one of the relatively rare cases where the Blue Book staff concluded no conventional explanation was adequate.