Mitchell AFB, N.Y., January 1952January 1952

On January 21, 1952, a U.S. Navy pilot in a TBM-3W aircraft spotted an unusual object near Mitchell Air Force Base in New York. Lieutenant James R. Zeitvogel, flying at 6,000 feet about three miles southeast of the base, first saw the object at around 0950 (9:50 a.m.) at an altitude that appeared considerably lower than his own. Zeitvogel described the object as pancake-shaped, roughly 20 to 30 feet in diameter, with a light color resembling a silk or nylon parachute canopy. The upper surface appeared quite bright, while the underside seemed darker.

The object began flying south of Mitchell Air Force Base on a course of about 210 degrees at an estimated speed of 300 knots. As Zeitvogel followed, the object made a sharp left turn and headed north, then began circling the base in a counterclockwise pattern, staying about two miles from the field's perimeter. Throughout this maneuver, Zeitvogel was able to fly fairly close by cutting inside the object's turns. He was flying at 160 knots, and from that comparison, he estimated the object was traveling at least 500 knots by the time it accelerated. The object showed no visible wings, tail, propulsion system, or exhaust. As it climbed rapidly and pulled away, Zeitvogel last saw it at an altitude between 5,000 and 10,000 feet, about six to seven miles southwest of the base. The object displayed a rocking or oscillating motion while flying level.

A weather balloon was released from Mitchell Air Force Base at approximately 0950, the same time as Zeitvogel's sighting. The balloon was a standard L-391C model, white in color, about three feet in diameter at release, with an aluminum radar target attached. An Air Force intelligence summary noted that while the object bore some resemblance to a balloon, the motion patterns and behavior described by Zeitvogel made the comparison extremely deceptive, and the report remained a mystery. The Air Force evaluation in the case file is listed as unknown.

The full case file is reproduced below as held by the National Archives across 16 pages.