Project 10073 Record Card — Denver, Colorado, 21 August 1956

On 21 August 1956, at 1101 MST, a civilian witness in Denver, Colorado, reported observing an unidentified object. The witness, a 16-year-old male, described the object as oval-shaped, resembling a coffee saucer, and white in color. According to the report, the object hovered for 2-3 seconds, circled for approximately two minutes, and then ascended. The witness initially stated the object looked like a bird, but later described it as having a surface that reflected sunlight like a mirror. The total duration of the sighting was estimated at 3 to 4 minutes. The report was processed by the Air Technical Intelligence Center (ATIC) under Project 10073. Official comments on the record card express skepticism regarding the report's consistency, noting that the witness had submitted reports previously and was known to be a 'believer in saucers.' The investigating personnel concluded that there was no data conflicting with an analysis that the object was an aircraft, suggesting that the observed phenomena—specifically the reflections—were consistent with aircraft at high altitudes. The documentation includes a teletype transmission from the Flight Service Center at Lowry Air Force Base to various intelligence and air defense commands, detailing the description and course of the object. The weather at the time of the sighting was reported as very clear.