Celina High School students Michelle Elston and Selena Posada are wheeled on a stretcher by Celina firefighter/EMTs at a mock crash Tuesday at the Mercer County Fairgrounds. The Mercer County Sheriff's Office and local EMS, fire departments, law enforcement agencies, funeral homes and other organizations staged the event. The scenario involved two carloads of students driving back from prom that were involved in a crash. One of the drivers was intoxicated. The mock crash was attended by juniors and seniors from Celina, Coldwater, Marion Local, St. Henry, Fort Recovery and Parkway high schools.