It reminded me of a brief conversation I had with Michael on the way home from school today. He was telling me about learning about his teachers. One of them used to be in the military and he said he's so glad she's in our school because she knows what to do with a gun. I mentioned that she didn't keep a gun in her classroom and his reply was, "But if she could get it away from someone trying to hurt us she would know how to use it." The most horrifyingly sad part of this exchange was how matter-of-factly he mentioned it and was on to the next thing.
Our children think of someone coming in and shooting at them in their schools as a thing that could possibly happen. We have to do better for them.