The Light over the Powder River

W. A. Bonneville had driven Highway 12 for about fifteen years. At about 11:30 on the night of 17 May 1948, just west of Plevna, he noticed "a very bright object in the sky to the Northwest". He pulled up at the Powder River Bridge and switched off the motor. Through his field glasses it looked like "a small object with a long very bright light shooting from the under part of it". It came in over the hills north of the road and hung in the north-west. Then it swung south toward the highway, "where it became real bright", and went back west, several times over. He heard no engine. After about twenty minutes it flew off into a heavy cloud bank to the west.

What is on the record

The Department of War released the file in June 2026 in DOW-UAP-D088. It holds Project Sign's check-list for Incident 130 and two letters from Bonneville, a territory manager for the B. F. Goodrich Company. "I am perfectly sincere and do not drink," he told Army Intelligence on 23 May. The second answers questions sent from Wright Field in June. He likened the light to a locomotive headlight "only about three times that bright" and rejected the idea that it was moonlight glinting off an aircraft. His own guess was "some kind of a jet aircraft that I perhaps had never seen".

An Air Force study of April 1949 (DOW-UAP-D094) retells the case with a different date, 15 June, and a "reddish glow". Both letters and the check-list say 17 May and a white light.

J. Allen Hynek's evaluation in the Blue Book file begins: "If the report is to be taken at face value, then no astronomical explanation of this incident is possible." He then observed that Venus was at its greatest brilliancy that very night and "would have appeared that night as an intensely bright light in the northwest". Bonneville's letter describes an overcast sky to the west with the moon showing now and then to the south.

Why it sits where it does

L4 · OFFICIAL RECORD — a released government record names who saw it. Bonneville is the only witness; the service station he passed was asleep. No independent testimony sits beside his letters in the archive, and the tier measures sourcing rather than truth. What circled over the Powder River is not resolved here.