Blank shots fired at Penta Career Center on Sunday.
But it was just a training exercise for Perrysburg Township fire, police and EMS personnel.
They were there to learn how to respond to an active shooter situation.
Emergency personnel took part in what was called a 'Tactical Emergency Care" class.
The goal is to move in and treat victims wounded by a gunman as soon as possible.
"What we're finding out, if it's life-threatening, hemorrhaging that happens after 2 - 3 minutes, and you can bleed to death from some of the wounds to the legs and arms. So we have to get the medics in sooner so they can start treating and make them more survivable," said Matt Homik with the Perrysburg Township Fire Dept.
Penta students played the role of victims in three different scenarios.