FLYOBRPT. 1. UNIDENTIFIED ROUND OBJ 100 TO 120 FT IN DIAM

This document is a military teletype message, dated July 29, 1952, originating from the 15th Air Force at March Air Force Base, California. It reports an unidentified aerial phenomenon observed on the night of July 28, 1952, at approximately 2300 hours. The report details a sighting by two individuals, one of whom was an employee at March AFB and the other a librarian at the Riverside Public Library. The observers were located at 4445 Orange Grove Avenue in Riverside, California, and were viewing the stars to the south of the city when the object appeared. The object was described as a round, bluish-white craft, estimated to be between 100 and 120 feet in diameter. It featured a short exhaust trail that the witnesses likened to a comet's tail. The object emitted a noise similar to a jet aircraft and was observed flying in a straight and level path. The sighting was brief, lasting only one to three seconds, before the object disappeared into scattered cloud cover. The estimated altitude of the object was 10,000 feet. The report notes that the weather conditions at the time were clear with high scattered clouds. The military unit historian noted that there was no known activity or condition that could account for the sighting. Furthermore, no physical evidence, fragments, or photographs were recovered, and no intercept or identification action was taken by the headquarters. The reliability of the observers was noted as unknown by the unit historian.