The Paint Creek Joint Fire Department identified the firefighter as Joe Patterson. His age was not released.
The accident occurred at about 2:16 p.m. at a Paint Creek station on U.S. 50 outside Hillsboro, Ohio, WLWT Channel 5 reports.
Patterson was flown to Kettering Medical Center in Kettering but died of his injuries, according to the Times Gazette.
The Highland County Sheriff's Department is investigating the incident, reports say.
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