Sad that those who have the job to protect us fail us (FBI and officer in this shooting). Don't love the idea of educators walking around armed all the time, but I think the idea of giving a few teachers or admin specialized shooter scenario training is not the worst idea. It should be focused on how to protect students and manage a shooter situation with firearm training as one potential component. Maybe not a great fix, but better than nothing. I also think all of the faculty should have to vote on the teachers to receive this training, and the firearms or protective devices should be biometrically locked in strategic locations with a silent alarm triggered when opened. Maybe even non-lethal options like bean bags, rubber bullets (better than nothing).
But don't you think it's going down the wrong road? I mean how many countries in the world has their teachers carry guns or weapons?
You're not fixing the problem at the root.