You guys act like they sit on there asses doing nothing, maybe so. But who is to predict a shooting like this. Not to mention the measures they would have to take to prevent this would be ridiculous, and probably would violate most of our rights, A place like VA shouldn't have metal detectors at doors, its simply shit that happens, some one fucked up lost it, what are we supposed to do about?

We really have no idea what happend there, for all they knew the guy barracaded himself in the building with guns, maybe he had hostages, the police dont just run it, they know worse shit can happen with force, maybe he had bombs he was gonna set off?

Tactic squads never run in a place they are unsure off.