Why is that people with the least knowledge and experience with weapons and dangerous encounters, like Ms. Marsden, tend to be the ones who believe that can tell everyone the way things really play out? Who is she to judge that because the criminal has a gun that he is necessarily crazy? How about just evil? We have armed guards and/or police in airports, banks, and shopping malls. Why would it seem so strange to have one in a school? Many places already do. These shooters are naturally cowardly people. They almost always kill themselves at the first hint of armed resistance by an authority figure. Let's have an authority figure on the premises! Maybe then they'll do us all a service and cap themselves off first.