Its happened again, a Mass Shooting at an american school. Reporter 12 students and one teacher killed, and the belief that children were Safe Inside School Walls there was gunshots, and we all got down and we crawled out. Reporter forever shattered. Anything you have in your Pocket Reporter in the months that followed columbine, School Administrators made drastic changes. At every entrance armed guards, metal detectors, surveillance cameras, twoway radios. Here to the door, back out of the room. Hands on your head. Reporter schools became Training Grounds for police, many of which had never been inside their schools. Cops across the country are training in schools this summer. They need to know the layout of those schools. Reporter that Summer Nbc profiled something unheard of to most americans then an active shooter drill. Help this is a drill. The blood and wounds are not real, but the threat to american schools is genuine. And now Education Experts say getting ready for class means getting ready for terrible