U.S. Air Force Analysis of Flying Objects in the United States, 1-100

Object traveled in a southeast direction at an estimated height of 10,000 ft or more and at a speed in excess of any aircraft he had ever seen. It was under observation for approx 60 seconds during which time it traveled over 3/4 of the visible sky. No definite color or shape could be determined. The object appeared to roll from side to side three times, and one side reflected the sun strongly from its surface while the other gave no reflection. He thought the size about that of a C-54. He states that during the time the object completed the roll it became very difficult to see and almost disappeared. No sound could be attributed to the aircraft.