If you get a chance to attend any of the ALERRT courses, you should do so. They are well done and thought out. There is very little difference between "Avoid Deny Defend" and "Run Hide Fight?", it's more of a change in lingo to make it sound less violent. The key in both is to plan before it happens. Get ready to run, have a plan, know the exits, do not stay at the X, for there you will die. Move, as soon as you walk into a room find the straight line to the nearest exit, then look for the next exit, and have a straight line to that as well. Start moving as soon as you feel something is not right, and keep moving till the situation improves, or you are out. If you can, get folks to follow you, but never stay in place. More people will follow you out than will listen to you tell them to leave. Anyone with a plan has a better chance of success, even if they do not follow the plan for some reason in the end. Without a plan you tend to stand in place and think about your next move, which can get you and those around you killed. So the plan is move on the straight line to an exit, even pick the exit as you stand there, it can always change if something happens, but your mind will react faster if you have at least an original plan.