Project 10073 Record Card — 16 August 1956

This document consists of a Project 10073 record card and associated teletype communications regarding an Unidentified Aerial Phenomena (UAP) sighting that occurred on August 16, 1956, at 2105Z. The witness, an employee of the Carnegie Institution, reported observing a single, large, aluminum-colored, cross-like object while playing ball with his son. According to the report, the object traveled at a great speed from north to south before turning east. It reached a position 10 degrees from the moon, at which point it turned upward and disappeared. The total duration of the sighting was 18 seconds. The witness reported that the object made no sound and left no exhaust or trail. The official evaluation, provided by the Duty Officer at the Directorate of Intelligence, HQ USAF, concluded that the sighting was likely caused by an aircraft reflecting low-angle light rays. The report notes that a flight of jets was sighted immediately afterwards, which may have contributed to the observation. The documentation includes a record card summarizing the event and a teletype message sent to the Air Defense Command (ADC) at Ent Air Force Base, Colorado, confirming the report details.