School Shooting Drill Terrifies Unknowing Teachers

This is a disgusting act of tyranny!
How do you prepare people for a situation like this? Not by telling them to cower under a table and wait for help, by the time police come everyone would be dead. The only way to prepare for such situations is to arm certain faculty and train them to disarm the shooter.
Drills like this are just "play time" for the cops and a chance for them to flex their muscles and show whose boss!

I would have laughed if the teacher was carrying a concealed and blew the guys brains all over the chalkboard.

I wonder what would have happened if someone actually did kill the actor. Would charges have been brought against them? How would they feel living there life knowing they had killed someone who, in their mind, was just playing a part. It would have screwed them up for life. Seriously between this kind of stupidity and all of our reluctance to speak out I don't think we as a species have long to go.