Concept 80 # 3

The event I would choose is a graduation. Everyone that is at the graduation will be very happy and excited but their will be a group of outcasts that will ruin the entire event. The group of outcasts are mental unstable and hate everyone at the school therefore they have decided to kill everyone by strapping bombs to themselves and blowing everyone up. The other students are tested to their maximum by trying to either escape as far as they can or try to talk to the bombers to change their minds.