Project 10073 Record Card and Supplemental Reports — San Diego, California, October 1957

This document collection details an unidentified aerial phenomenon (UAP) sighting reported on October 14, 1957, in San Diego, California. The primary report originates from a tower operator at NAS North Island, Vyrl E. Ewing, who observed a bright light that appeared to change color from blue-white to orange-red. The object was described as stationary, then moving rapidly, and was later tracked by a VS-21 aircraft piloted by LT Allen L. Ries. The pilot reported that the object exhibited rapid acceleration, reaching speeds estimated in excess of 1000 MPH, and maintained a separation from the pursuing aircraft despite radical power changes. The object was also tracked by airborne radar, which recorded it at 17 miles, maintaining contact for 40 miles before the object disappeared at a bearing of 230 degrees. The official Air Force conclusion, documented on a Project 10073 record card, attributes the sighting to the star Arcturus, suggesting that the reported movement, color changes, and radar returns were the result of atmospheric inversion and optical distortion. The collection also includes supplemental correspondence, including a speedletter from the Commanding Officer of Air Anti-Submarine Squadron Twenty-One, providing the pilot's detailed statement. Additionally, the file contains various press clippings and reports from October 1957 regarding other sightings, including reports of 'balls of fire' over Dayton, Ohio, and 'angel hair' residue in Japan, reflecting the broader context of UAP reporting during that period. The documentation emphasizes the military's attempt to systematically evaluate these reports, often concluding that they were either insufficient data or identifiable phenomena such as stars, planets, or weather-related anomalies.