I have no problem with that. Really. None at all. By all means help these people as much as possible and catch them beforehand if we can, but we must understand that there is zero possibility to stop them all.
I just note that the best way to protect the kids is the same way we protect the politicians, make the targets hardened. Hire people to protect them and show that they are as important to us as the crappy politicians we have "leading" us. I don't think the best solution is a teacher with a gun. Such training needs to be kept up, practiced. We need qualified people to protect our kids. Not that I think teachers shouldn't be allowed to carry if they have CCW permits, I just think that if we are going to be serious we need to find some money in the ever increasing budgets of our schools to show that this is intolerable and will not happen again on our watch.
Seriously, the idea that re-instituting another cosmetic bill to ban "assault weapons" that is being promoted (not by you, Rune) is worthless. This guy didn't even bring an "assault weapon" into the school. He used two handguns to massacre innocents leaving the rifle in the car. A trained armed guard could have stopped this, just like trained armed guards are used to stop attacks on our "beloved" politicians. Why do we protect people we so often hold in contempt with all possible care and disregard protection for those we hold as some of the most important people in our lives, near sacred?