Confederate Yank on the psychology of courage. How do people behave when they feel trapped? I think a "Let's roll" reaction could have taken the guy down. We only know of one guy who even confronted Cho - Liviu.
Not to blame the victims, but just wondering. For example, if Cho had decided to take on the Rugby team in their locker room or an ROTC class, instead of a German language class, would it have ended differently?