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

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Witness was getting out of his car when he observed one disc flying in a Southwesterly direction over Portland. Disc was aluminum in color and traveled at terrific speed - faster than any flying object witness had ever seen - It left no vapor trail or smoke trail. Known to flying objects as a disc, estimated altitude approx 30,000 ft. Thought the disc was definitely some type of aircraft but could not give further description as speed made observation difficult. No sound was heard from the flying object. He thought it appeared radio-controlled because the disc could change direction at a 90° angle without difficulty.