(Project Blue Book, U.S. Air Force, Washington, D.C.)
Source: Fold3.com, Lindon, Utah
Quote from the document (Page 5):
“Description of Incident
At 1551Z, a radar track appeared 20 miles NNW of W-P AFB. The course was 240° at 400 knots. Two F-86’s under GCI control were then located ten miles SW of that position. The fighters were vectored and made visual contact at 1555Z. Fighters stayed with the object until 1613Z.
Interrogation of sources, an AF major and lieutenant, reveal the following:
b. The AC&W Squadron established two important facts: Re-affirmation that the UFO moved at 400 knots and indication that the two F-86’s and UFO appeared simultaneously on the GCI scope. It is obvious that all eyes and antennas were fixed on the same object.
The object was not a balloon, since the speed was too fast. A rawinsonde was released at 1500Z and moved off to the east. The object moved against the wind. The blip size was that of a normal aircraft. The object was not a known aircraft because the altitude was too high. The object was not astronomical as dual radar returns eliminate this. Electronic or visual mirage of meteorological phenomenon is out of the question as the radar set was on high beam, and both would not occur simultaneously in the same place. The sighting occurred ‘above the weather’.
Satellite photo of Bellefontaine, Ohio (tageo.com)