After taking SIG SAUER’s Active Shooter Response Instructor class (click here for my report) I fully agree with Plainfield Police Chief John Konopek: an AR-15 style rifle is best for eliminating a spree killer inside a school. For all the reasons the Chief shared with the Huffington Post: greater range, accuracy and stopping power. OK, maybe not stopping power; a .45 handgun or shotgun would be my choice for puttingthebadguydownosity. As for the Chief’s desire to store ARs at four local schools, I think it’s more a matter of not scaring the horses than practicality. How would parents and students react if they saw police officers assigned to a school walking around with ARs? Of course, an active shooter might think twice in that situation, as he would if parents and teachers were “allowed” to exercise their right to keep and bear arms inside school property.