In the early morning hours on 24 October 1968, United States Air Force (USAF) maintenance and security personnel within the Minuteman Intercontinental Ballistic Missile (ICBM) complex surrounding Minot Air Force Base, North Dakota, observed one, and at times, two UFOs. The Minot Base Operations dispatcher established radio communications with personnel reporting in the field, Minot AFB, Radar Approach Control (RAPCON), and the crew of a returning B-52H aircraft.
RAPCON alerted the pilots to the location of the UFO, which they observed on the B-52 radarscope maintaining a three-mile distance throughout a standard 180° turnaround. As the B-52 initiated the descent back to Minot AFB, the UFO closed distance to one mile at a high-rate of speed, pacing the aircraft for about 20 miles before disappearing off the radarscope. During the close radar encounter, the B-52 UHF radios would not transmit, and radarscope film was recorded.