How to stop school shootings
After the 911 skyjackers rammed their planes into our buildings, what did we do? We created an air marshal program. We recruited highly-trained armed individuals and asked them to blend in with ordinary air passengers.
You would only know who those air marshals were — get to see the air marshal in action — when someone jumps up and is running to the cockpit with their briefcase. The air marshal would be the one who puts a gun to his or her head and asks them to get on the floor.