Project 10073 Record Card — Denver, Colorado, 6 March 1953

This document consists of a Project 10073 record card and associated teletype communications regarding an aerial sighting that occurred on March 6, 1953, in Denver, Colorado. The primary witness was a CAA control tower operator stationed at Stapleton Airport. The observer reported seeing three to four objects described as huge balls, appearing as big or bigger than a full moon. The objects exhibited green flashes, red tails, and green and white flashes before burning out. The duration of the observation was brief, estimated at one to two seconds. The flight path was described as moving toward the north-west and north-east, arcing across the sky. The sighting was also noted by other observers, including United Airlines personnel over Big, south of Denver, and over Myton, Utah. The official conclusion reached by the Air Technical Intelligence Center (ATIC) was that the objects were likely a very bright meteor. The documentation includes detailed weather data for the time of the sighting and notes that while the official assessment pointed to a meteor, the tower operator remarked that the object was larger than anything they had previously witnessed.