Unidentified Flying Object - Selfridge AFB, Michigan - March 1950

This document comprises a series of intelligence reports and correspondence regarding an unidentified flying object observed on 3 March 1950 near Selfridge Air Force Base, Michigan. The object was observed both visually by a pilot and electronically via two separate radar systems, the L-Band CPS-5 and the S-Band CPS-4. The visual report, provided by a 1st Lieutenant, describes a light source that descended vertically, hovered for approximately one minute, and then performed erratic maneuvers, moving west, south, and north over a period of four minutes. The witness compared the light to a house window viewed from 30 yards, noting it possessed an intense, dull glow. Radar controllers reported the object at altitudes ranging from 5,000 to 45,000 feet, with estimated speeds reaching 1,500 miles per hour. Technical experts at the Continental Air Command evaluated the radar data and concluded that the observed velocity and accelerations were beyond the capabilities of any known aircraft. Furthermore, they noted that the correlation between the two radar sets ruled out anomalous propagation effects. The report emphasizes that the frequency of such sightings had increased, leading to instructions for all radar installations within the command to report similar unusual sightings. The document concludes that no known electronic phenomena could account for the observations, and recommends that reports of unidentified objects be reconsidered for submission from all Zone of Interior Air Force agencies.