Project 10073 Record Card — 28 February 1955, Edwards AFB, California

This document is an Air Intelligence Information Report regarding a sighting of two unidentified aerial objects near Edwards Air Force Base, California, on February 28, 1955. Two witnesses, both employees of the Aerophysics Division of North American Aviation Inc., observed the objects traveling north at approximately 1145 PST. The witnesses described the objects as having a delta-wing shape with rounded wing tips, appearing to fly in a 'backwards' direction at a speed significantly faster than any conventional aircraft they had previously observed. The objects produced no sound and left no vapor trail. The duration of the sighting was estimated at 20 to 30 seconds. Following the incident, an investigation was conducted by the 4602D Air Intelligence Service Squadron. A thorough check of air facilities in the Southern California area confirmed that no military aircraft were in the vicinity at the time of the sighting. The initial report from the preparing officer suggested the phenomenon might be a result of a temperature inversion or possibly Navy 'Sky-ray' jets, noting that the observer's description of 'backward movement' was likely a subjective error. However, the Headquarters review rejected the temperature inversion theory, citing the high angle of the sighting and the specific physical characteristics reported by the witnesses. The report concludes that the incident remains unresolved. The document includes sketches of the objects and detailed statements from the witnesses, who were considered sincere and cooperative, despite some skepticism regarding the accuracy of their observations.