Bright object observed over St. Louis, Missouri — Gateway to the West (1955)

Project Blue Book Case #3860. On November 17, 1955, a bright object was observed over St. Louis, Missouri. The city was home to McDonnell Aircraft (producing the F-4 Phantom), Scott AFB across the river, and the Mallinckrodt uranium processing facility that had processed ore for the Manhattan Project. The case was classified "Unknown."