As reported

Changing over Mackinaw (20 Min South Of; On Hwy 75), MI

A witness account on file, unevaluated. Most of the archive rests here, and honestly so.

The report, as filed

Craft changed from circle to triangle in flight.

Held as-reported from National UFO Reporting Center. Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.