Aside from the fire chief and a fellow firefighter who provided the vehicles, Jeremy Schellhorn, a Monona firefighter and one of the event organizers, said first responders knew little about the mock accident scenario beforehand. “The only thing the guys know right now is we’ll be calling them out. The only thing EMS knows is I want both units and three EMTs in each. It will be true and accurate to how we do a scene,” he said prior to the event.