Report of Information on Unidentified Objects — George AFB, California, 11 August 1952

This document consists of a collection of intelligence reports and correspondence from the 146th Fighter-Bomber Group at George Air Force Base, California, dated August 1952. The primary subject is the reporting of unidentified flying objects observed on 11 August 1952. The file includes a formal transmittal letter from Captain Daniel W. Snow, the Intelligence Officer, to the Air Technical Intelligence Center at Wright-Patterson Air Force Base, enclosing two separate reports regarding the same incident. The first report is from 1st Lieutenant William F. Van Steenburgh, who observed the object while driving on George Air Force Base. He described a single, round, bright, and shiny object that appeared to hover at approximately 20,000 feet for three to four minutes before disappearing. He noted that he had no optical or electronic equipment and lost sight of the object while attempting to navigate traffic. The second report is from Colonel Amos F. Riba, the Commanding Officer of the 146th Fighter-Bomber Group. Colonel Riba, an experienced rated pilot, was flying as the number two man in a formation of F-51 aircraft when he sighted the object. He also described it as bright and shiny, hovering or in a slight climb, at an altitude of 15,000 to 20,000 feet, approximately 10 miles away. He observed the object for about one minute before losing sight of it during a turn in formation. Both reports emphasize that the object displayed no exhaust, no vapor trail, and no visible means of propulsion. The weather conditions were reported as CAVU (Ceiling and Visibility Unlimited). The intelligence office noted that the information was incomplete, specifically mentioning the lack of data on winds aloft and the absence of local balloon releases. The file also contains teletype messages summarizing the sightings and a map (WAC 404) illustrating the location of the observers and the object.