Incident Report: Fireball Sighting, 9 December 1965

This document collection details the investigation into a widespread fireball sighting that occurred on the afternoon of 9 December 1965. The event was observed by numerous civilians, airline pilots, and residents across Indiana, Ohio, Pennsylvania, Michigan, and parts of Canada. The object was described as a brilliant, pencil-shaped fireball that descended in a 70-degree dive, accompanied by an orange flame and a loud sonic boom. It left a smoke trail that remained visible for at least 20 minutes.

Following the event, the Air Force, specifically Project Blue Book under Major Quintanilla, received numerous inquiries from the public and news media. A search for debris was conducted by an Air Force team and the State Highway Patrol in the vicinity of Acme, Pennsylvania, but nothing was found. Concurrently, Lapeer County Sheriff Kenneth A. Parks submitted physical material found in Lapeer County, Michigan, to the Foreign Technology Division (FTD) for analysis. The FTD determined that this material was 'chaff'—radar-foiling material dropped by aircraft during interdiction exercises—and explicitly stated there was no connection between the fireball and the chaff.

Official Air Force communications concluded that the fireball was a natural bolide or meteor. Investigators emphasized that the object was visual only and not tracked by radar. Despite public speculation and reports of 'strange metal strips' found in various locations, the Air Force maintained that the fireball was a natural phenomenon and that the recovered debris was unrelated military material. The documents include internal memos for the record, correspondence with the Lapeer County Sheriff, and a published article from 'Sky and Telescope' (February 1966) which provides a detailed scientific account of the fireball's trajectory and the subsequent investigation.