Incident Report: Darlington-Monroe, Wisconsin Sighting, 31 May 1953

This document compiles reports and correspondence regarding an unidentified aerial object sighted in the Darlington-Monroe area of Wisconsin on May 31, 1953. Between 0320 and 1130 CST, eleven individuals, including local police officers, a sheriff, and a newspaper reporter, observed a brilliant, steady white light in the eastern sky. Witnesses described the object as appearing larger than a star, sometimes hovering, and at other times moving at high speeds. Some observers reported the object rose slowly, while others described it as moving rapidly. The sighting was reported to the Air Technical Intelligence Center (ATIC), prompting an investigation by Lt. R.M. Olsson and Dr. J.A. Hynek. The investigators interviewed eight of the eleven witnesses and concluded that the object was the planet Venus. They determined that Venus, which rose at 0310 CST that morning, was at its maximum brilliancy. The investigators noted that exceptional atmospheric conditions, specifically the lack of haze, allowed the planet to remain visible in broad daylight. They attributed the reported erratic maneuvers to the 'human element' and the lack of a balancing reference point for observers staring at a bright light for an extended period. The document includes completed technical information sheets from several witnesses, correspondence between ATIC and the McMillin Observatory, and internal memos discussing the investigation. Despite the official conclusion that the object was Venus, the file reflects the initial confusion and the subsequent efforts by the Air Force to systematically investigate and explain the sighting through standard procedures, including the use of the Ground Observer Corps and local police reports.