Air Intelligence Information Report: MCAS El Toro UFO Sighting, 11-12 November 1956

This Air Intelligence Information Report details a series of unidentified aerial phenomena observed at Marine Corps Air Station (MCAS) El Toro, California, between the evening of November 11 and the morning of November 12, 1956. The events involved multiple witnesses, including GCA operators and pilots, who reported seeing both visual lights and radar returns. The objects were described as moving erratically at speeds ranging from 50 to over 2,000 knots, with some radar returns suggesting speeds as high as Mach 25. Despite attempts to intercept the objects using a helicopter and two F-86 fighter aircraft from George Air Force Base, no physical contact was made, and pilots reported seeing nothing despite being vectored into the vicinity of the radar targets. The report includes detailed statements from personnel, including Sgt. William E. Word, M/Sgt. Philip D. Karnowski, and Captain M.H. Shumaker, who provided accounts of the radar activity and their failed interception efforts. The investigation also involved contacting local weather stations, other radar sites, and observatories, all of which reported negative results or nothing unusual. Photographs of the radar scope were taken and submitted to the Air Technical Intelligence Center (ATIC) for analysis. The official conclusion reached by the approving officer, Colonel John W. Meador, was that the sightings were likely caused by anomalous propagation, potentially compounded by the excitement of the observers, which led them to attempt to correlate unrelated visual and radar events. The report emphasizes that the radar equipment was functioning correctly and that the phenomena were likely typical of anomalous propagation resulting from weather conditions or interference, rather than material targets.