I agree it was unbelievable and heads should roll. I assume there going by some rule I can’t remember the exact words that going down a hall way with a shooter will get you killed but to corners like they ran to even though no body was standing in a hall way!!! I’ve never seen so many cowards gathered in one place. These teachers should be armed. Even if they weren’t cowards a gun could kill a lot of people before they get there. The average citizen is just as much risk as they are and more so if unarmed. The schools should have bullet proof fire doors in the halls that could automatically close and trap the perp before he even gets to them with cameras to make sure no one else is trapped and a small bulletproof window case he shoots out the cameras.
The rooms need to be armed and with a gun that can shoot through a door or bulletproof proof doors and a gun as well as bulletproof proof shields in the room.
Do you know they have bulletproof proof backpacks or inserts for backpacks for kids? That may help if there running from a shooter.