Like seriously, a Jihadi with a bomb or a guy named Markus who you once called stupid a few times has entered the building. First reaction, and then what would you do? For me, taking the realistic route, I'd freak out and keep freaking out and probably die, taking the unrealistic route, I'd probably hide in the least likely place they'd look or play dead like that one survivor of Columbine did. ( i know there are other survivors )