Between 1948 and 1958, the Air Force filed a quiet run of rectangles as unknowns. The witnesses were not casual observers: an Army master sergeant, an Atomic Energy Commission guard, three research engineers, a bomber crew, two airmen and an Air Force major flying a transport plane.
What they described was usually small and close. Four amber rectangles about three by four feet at Fort Monmouth. A six-by-four-foot aluminum rectangle passing 250 feet below a B-25. A bar about three and a half feet long over Long Island.
Several were turning. On April 14, 1958, Major D. G. Tilley, flying a C-47 near Lynchburg, Virginia, saw a gray-black rectangle rotating very slowly on its horizontal axis. He had it in view for four seconds.