At both places I work at right now, this scenario could easily happen. The lobbies are open and only the elevators and stairs have access cards. Actually, most

At both places I work at right now, this scenario could easily happen. The lobbies are open and only the elevators and stairs have access cards. Actually, most places I've worked at were like this. However, I can't imagine setting fire to the lobby would kill 20+ people in any of these places, since they all have many emergency exits. To me the craziest part of this story is the amount of destruction this person caused with just a can of gasoline.