By the way, Israel is a very special case in that they are surrounded by people that wish to destroy them. Hopefully, we are not in that condition yet in the US!
I am willing to admit however, that we do have a very large and special problem in that unlike other first world countries that do not have large quantities of guns in the hands of most of their populations, we already have well over one hundred million guns in this country. This makes it very difficult for us to do something about the incredible mass killings that occur so much more often in this country than in other countries.
And I will also admit that while I do not have the answer, I know that putting even more guns in the hands of such people as teachers is not going to help.