School Safety Experts Disagree on Lock Down Procedures After Newtown Shooting

Along with fire drills, schools have been conducting lockdown drills -- often known as active shooter drills -- since the Columbine massacre in 1999. But safety officials do not agree yet on what teachers and students should do when a homicidal gunman invades their school. At Sandy Hook Elementary School, teachers, staff and students had been drilled on how to handle such a situation. "We practice it, and they knew what to do, and you just think about protecting the kids, and just doing the...Full Story