"The third survival tactic is the most difficult but none-the-less necessary. A shooter enters the classroom and starts shooting at people. Remember, there is nowhere to run or hide.
The strategy begins with the first person who notices the shooter and yells “GUN!” Everyone in the room then throws whatever is available, as hard as they can, at the shooter’s face causing him to flinch, and preventing him from taking aim. Then what’s known as the “throw and go” tactic is implemented."