This is why we need to arm teachers: Glenn Beck deserves a lot of credit for this story
Glenn's guest, Brad Thor, gets it partially right when he says "You want an armed presence at your school." He then points to armed guards and police. The problem with armed guards and police is that if they are present, they will be the first ones taken out. It is good to have some there, but it is cheaper and much better to allow armed teachers and staff. He makes four points on school security: deter, detect, delay, and destroy. Armed teachers and staff can help with all these four points (even "detect" because they might be more able to successfully detect and alert others if they are armed). The deterrence, delay, and destroy aspects are more obvious. Thor points to Israel, but he doesn't mention that they arm teachers in Israel.