I had to ask my son last night.  I didn't want to scare him by telling him what happened in Texas, but I had to know how his teachers had prepared him for what has happened at far, far too many schools since Columbine High School.  "Honey, have your teachers talked to you about what to do if a bad guy with a gun came inside the school?"  He didn't even hesitate. He didn't even hesitate. "Yeah. They said to lock the door and go out the window," my son answered. "Unless the bad guy is coming in through the window, then we go out the door."  My sweet child -- who has been alive fewer years than have passed since a gunman blasted his way through a glass panel at Sandy Hook Elementary and killed 20 first-graders and six staff -- has been trained on what to do during a shooting.  He is not law enforcement. He was not conscripted into the military.  He is 9.  I know how he's the first one to come to the aid of another person. I've seen him sto