Anyone planning on going Columbine at a school campus will have second thoughts if they are not sure if the teachers are packing or not. Better than police presence because it multiplies the number of defensive guns on campus immediately. I also propose that they come out with a first person shooter game where a teacher gets to protect her flock and practice tactics and strategies on blowing away the thugs as they try to enter the classrooms. Hey it might level the playing field and make them think twice if THEY are viewed as targets for a change...: )