With armed teachers on site, the shooter would NOT have gone there. With armed teachers, it would no longer be a gun-free “killing zone.” Even a handful of aggressive LEOs would have kept him away. Apparently, he had already “cased” the premises for any kind of valiant child-protectors and found none? Anybody know about this aspect?
Rampage killers want to rack up a big score.
The chance of that goes down significantly with more armed responders on site.