PROJECT 10073 RECORD CARD - Yuma, Arizona - 13 February 1957

On February 13, 1957, at approximately 1920 local time, a civilian observer at Black Prison Hill in Yuma, Arizona, reported a sighting of an unidentified aerial object. The observer described the object as having the appearance of a pinhead, which changed colors from red to green to white. The object was reported to be barely moving, lacking a tail or exhaust, and was observed for a duration of one and a half hours. The witness also reported that the object was initially attacked by a long line of lights and that pieces appeared to fall off the object. The report was processed by the 864th ACWRON and forwarded to various Air Force commands, including the Air Technical Intelligence Center at Wright-Patterson Air Force Base. The investigation, led by 1st Lieutenant Bernia R. Schmartz, concluded that the sighting was likely an astronomical phenomenon. Specifically, the report notes that astronomical charts confirmed the star Sirius was in the general position reported by the observer. The sighting was categorized as an astronomical event, and no further action was indicated.