Reporting of Information on Unconventional Aircraft — El Centro, California, 13 May 1952

This intelligence report details a series of sightings of unconventional aircraft over Southern California and Arizona on the morning of 13 May 1952. The events began when the El Centro Sheriff's Office reported five flying saucers, described as being as large as B-36 aircraft with lights underneath, hovering over El Centro before disappearing to the southwest at a high rate of speed. Simultaneously, an F9F pilot from the El Centro Naval Air Station reported what appeared to be a shooting star, while a sheriff's car in Niland, California, observed an object resembling a parachute flare. A control tower operator at Yuma, Arizona, also reported sighting a pulsating orange and blue object that hovered and changed positions for approximately 30 minutes. The report includes detailed interrogations of local law enforcement and tower personnel. One patrolman from Imperial, California, described seeing three objects that were later joined by two more, which then orbited before disappearing. The Yuma tower operator, who had significant flight experience, noted that the objects were not conventional aircraft. However, subsequent investigations by the Office of Special Investigations (OSI) suggested alternative explanations. Some witnesses were deemed unreliable, and investigators concluded that the sightings were likely a combination of B-47 aircraft maneuvers, meteors, or the reflection of automobile headlights on the highway, a phenomenon the Yuma tower operator had observed on other occasions. The report highlights a significant communication gap between civil law enforcement and military authorities, noting that local agencies lacked the established procedures to effectively report such incidents to the military. The final assessment by the Director of Intelligence for the 27th Air Division suggests that the sightings were likely misidentified conventional aircraft or natural phenomena, while emphasizing the need for better coordination in future reporting.