IncidentThe Gorman Dogfight (1 October 1948)

After a cross-country flight, Gorman pursued a blinking ‘ball of light about six to eight inches in diameter, clear white and completely without fuzz’ over Fargo for ~20-27 minutes, reporting head-on passes, sudden 180-degree turns, and steep climbs; his Mustang stalled near 14,000 ft while the light held higher. He wrote, ‘I am convinced that there was definite thought behind its maneuvers.’ Control-tower operators and a Piper Cub pilot reportedly also saw the light. Project Sign investigated (a Geiger counter over the Mustang gave elevated readings briefly entertained then dismissed as normal for a high-altitude aircraft) and concluded a lighted weather balloon, released from Fargo at ~8:50 pm, was in the area; the ‘dogfight’ maneuvers were Gorman’s own aircraft motion relative to the near-stationary balloon (relative-motion / autokinetic illusion), with a possible later chase of Jupiter. Ruppelt named Gorman one of the three 1948 ‘classics’ (with Mantell and Chiles-Whitted) that convinced early Air Force intelligence UFOs were real. A textbook case of a compelling ‘intelligent maneuvering’ encounter best resolved by a balloon plus the perceptual illusions of high-speed night pursuit.