DAYTON, Ohio -- A military plane that was practicing for an air show in heavy fog has crashed at an airport in Ohio, officials said Friday.

CBS affiliate WHIO-TV reports an F-16 Thunderbird crashed and overturned shortly before 1 p.m. at the end of a runway at Dayton International Airport.

The U.S. Air Force Thunderbirds confirmed crew members were "conducting a familiarization flight" and "there was a mishap upon landing."

USAF Thunderbirds were conducting a familiarization flight June 23. There was a mishap upon landing at 12:20 p.m. More info to come. — Thunderbirds (@AFThunderbirds) June 23, 2017

Penelope Reed of the Montgomery County Sheriff's Office said Wright-Patterson Air Force Base dispatched a crash team and heavy rescue crew.

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Two people were onboard the aircraft. Authorities say one of the pilots has been extricated from the plane. Crews are working to remove the second pilot form the aircraft.

A witness told WHIO-TV the F-16 had slipped and flipped onto its top as it came in for landing.

No injuries or report of any fuel leaks were immediately reported.

Dayton's annual air show begins Saturday.