Project 10073 Record Card — Pueblo, Colorado, 21 August 1957

This document consists of a Project 10073 record card and an associated UFOB message regarding an aerial sighting on August 21, 1957, at Pueblo Airport, Colorado. The report details an observation made by an operations officer from the 1006th AISS. The witness reported seeing two round, white objects, described as being the size of a finger tip, positioned one below the other. The observation was conducted using binoculars. One of the objects moved in an easterly direction and was visible for approximately five to ten seconds. The second object moved in a northerly direction and remained visible for seven minutes before fading into haze or clouds. The witness noted that the object moving north traveled at a speed comparable to that of a Convair aircraft. Weather conditions at the time were reported as cloudy with a surface wind from the north at four knots. The official conclusion recorded on the project card is that the event was a 'probable a/c sighting' (probable aircraft). The documentation includes a formal UFOB message transmitted from the Commander of the Air Defense Command at Ent AFB to the Air Technical Intelligence Center (ATIC) and other military commands, confirming the details of the report.