the picture we had was from people in a multi-story apartment-style dorm. it looked over an area that WASN'T part of the school's campus. there was never any active shooting at all. it was just a guy who HAD an airsoft rifle. as for why, why not? this isn't england, we can still have toys that look scawy. up close, MOST airsoft have orange tips specifically to prevent this. if he didn't have an orange tip on it he was a retard.
another reason could be any number of places he's going to use the rifle for any other number of uses, plinking, airsoft, just larping in the woods like you're tacticool. that's the best part of america; you're free to do that. nobody should be assuming someone who HAS an assault rifle is an imminent threat to them unless they are *near* the person with the weapon. and if you're in the position the people who were in the high up window were, what kind of retarded mass shooter would just start trying to shoot into random windows hoping to kill someone?