We all know that Columbine had an armed sheriff's deputy on duty at the time of shooting. Virginia Tech had armed police on duty. Ft Hood had dozens of guards and MPs not to mention the trained military who were shot. We also know that there was an armed civilian at the Tucson shooting who stayed inside the Walgreen's store until the unarmed people wrestled the gun away from Loughner. He later said he almost came out but then his story changed several more times. It was the unarmed people, including an elderly lady, who held Loughner until the police arrived. In almost all shootings, its the police who stop the shooter or the shooter kills himself. In searching, I've found only one case of a civilian and one case of an off duty police officer taking down a shooter. There are also occasional cases of people disarming home invaders but, since this is not a second amendment issue, those stories have nothing at all to do with the question of armed police at schools. Since having armed guards has never helped before, why do gun nuts believe that will change? Do gun nuts want armed guards at other places as well? Churches? Restaurants? There have been shootings at both so should there be armed guards there as well?