June 29, 1952 — Chicago, IL
5:45 p.m. Three Air Force police officers of the 83rd Air Base Squadron at O’Hare Airport in Chicago spot a flat, oval object as it hovers between two radio towers about 7 miles away. It is bright silver in color, encircled by white haze, and appears about 30 feet in diameter. During the next 45 minutes the object moves to the southwest and then back north. It accelerates instantaneously to a speed faster than a jet fighter. [Eberhart]
ATIC Report (AF-112):
Telex:
Sources:
Brad Sparks, Blue Book Unknown Catalogue, Case 651, p. 143;
[Blue Book documents];