Selfridge AFB, Mich., August 1952August 1952

On the night of August 14, 1952, multiple airmen at Selfridge Air Force Base in Michigan watched two bright lavender objects move across the sky in ways that puzzled military observers. The lights appeared one after another, about 8 to 10 minutes apart, and seemed to travel with tremendous speed while making unusual stops and changes in direction.

The first object was spotted around 10:03 p.m. by two airmen standing near the east side of the base, not far from Lake St. Clair. It appeared to be the size of the North Star and came from the west, traveling northeast while climbing higher into the sky. The light seemed to slow down over the "Jet Lancer" location on Highway 19-29, near the northeastern end of the base, and then turned east, disappearing over the horizon. The whole sighting lasted about two minutes. A few minutes later, a second light of the same lavender color appeared from the west. This one climbed much higher and faster, zigzagging dramatically before stopping near the location of the first object. After pausing, it continued moving and eventually stopped again high in the sky, about 90 degrees above the horizon. When additional airmen were called to watch, one of them reported this second light to the Staff Duty Officer. The light continued moving eastward until it grew dim and disappeared around 10:40 p.m.

Several witnesses provided written statements describing the objects. Each observer noted the lavender color, the lack of any trail or sound, and the objects' ability to stop and hover in place. Multiple witnesses remarked on the extraordinary speed, saying it was far beyond what known aircraft could achieve. One observer stated that the object moved with "incredible speed, far more than any known aircraft." The witnesses also noted that the objects zigzagged and suspended themselves in mid-air for periods of time, behavior they considered inconsistent with aircraft or balloons.

The base's radar station reported no unusual observations. A weather balloon called a rawinsonde (a device used to measure atmospheric conditions) had been released at 1:00 p.m. that day. The weather at the time was clear, with 7 miles of visibility, light winds near the surface (120 degrees at 7 knots), and no cloud cover or thunderstorms. An officer from the 61st Fighter-Interceptor Squadron noted that jet aircraft were in the vicinity at the time, though no interception was attempted. The base's Director of Intelligence evaluated the sightings as having been caused by a rawinsonde balloon. However, the witnesses' detailed descriptions of rapid movement, hovering, color, and behavior did not match the typical characteristics of a balloon, and the case file does not resolve the apparent contradiction between this evaluation and the observations recorded.

The full case file, consisting of 14 scanned pages, is reproduced below as held by the National Archives.