Project 10073 Record — Livermore, California, 6 May 1949

This document contains a sighting report from May 6, 1949, regarding two unidentified objects observed near the Livermore airport in California. The witness, a civilian, reported observing the objects for five minutes while they were traveling at a high rate of speed and altitude, estimated at approximately 20,000 feet. The objects were described as brilliant, saucer-shaped, and capable of complex maneuvers, including rotating around each other in half-mile circles and banking, which caused them to cast reflections. The witness noted that the objects left a trail of gray-colored vapor behind them. The observer also mentioned watching a commercial transport plane in the vicinity, which allowed for a size comparison, noting the objects appeared smaller but were at a much higher altitude. The witness explicitly addressed the possibility of the objects being illusions, stating that they had attempted to view them from the corners of their eyes and confirmed they were not seeing an illusion. Following the disappearance of the objects, the witness inquired with a service station attendant to see if they had also observed the phenomena, but the attendant had not. The report includes a formal acknowledgment from the Intelligence Department of the USAF, signed by Colonel W. I. Clingerman, confirming that the witness's contribution had been made a matter of record and would be incorporated into the ongoing study of the phenomena. The official conclusion recorded on the project form is 'UNIDENTIFIED'.