Project 10073 Record Card — Manitou Springs, Colorado, 28 March 1957

This document consists of a Project 10073 Record Card and an associated teletype message regarding a UFO sighting reported on 28 March 1957 in Manitou Springs, Colorado. A civilian witness reported observing a single yellow object, described as appearing the size of a pinhead at arm's length, moving slowly in a southerly direction. The observation lasted for approximately thirty minutes. The object was noted to be five degrees above the mountains. Military authorities, including the 4602nd AISS at Ent Air Force Base, investigated the report. The official conclusion reached by the Air Technical Intelligence Center (ATIC) was that the object was a balloon. This determination was based on the fact that a balloon had been released from Grand Junction, Colorado, at 0900Z that same day. Analysis of the prevailing winds at the time of the sighting supported the conclusion that the object observed by the civilian was indeed the released balloon. The teletype message provides additional technical details, including atmospheric conditions such as scattered clouds and light winds, and confirms that no radar contact was made during the event.