John Wayne Airport practiced its response to a major emergency Friday.
Half a dozen county agencies plus hospitals, Delta Air Lines, the American Red Cross and other emergency personnel took part in the drill from 9 a.m. to noon that simulated a crash with multiple casualties.
The Federal Aviation Administration requires the full-scale drill every three years, according to a news release from the airport.
"The purpose of the drill is to test and practice the operational capability of the airport's emergency management system in a real-time environment," the release said.
Friday's simulation used an Orange County Transportation Authority bus as a stand-in for a Boeing 737 that had collided with a small Cessna on the runway.
Officials staged the drill in a secure aircraft parking area on the east side of the JWA airfield.
The rest of the airport continued to operate normally.
-- Jeremiah Dobruck