Bright object observed over Naperville in suburban Chicago (1962)

Project Blue Book Case #7841. On March 26, 1962, a bright object was observed over Naperville, Illinois — a western suburb of Chicago in DuPage County. Naperville's position beneath the busy O'Hare approach corridors meant residents were expert at recognizing routine air traffic. Argonne National Laboratory was approximately 15 miles to the east. The case was classified "Unknown."