As reported
Triangle over Highway 24 (Near St. Louis), IL
A witness account on file, unevaluated. Most of the archive rests here, and honestly so.
The report, as filed
saw a triangle shaped craft, drove under it, it imploded into orange ball of light and shot straight up.
Held as-reported from National UFO Reporting Center. Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.