[kraigwy]

One thing being over looked here is what not to do in a active shooter situation.

Fleeing is the best option, hunkering down is second best.

However if you hunker down you need to be prepared in case the bandit discovers you.

Along the same lines you need to know how not to act if first responders find you.

That requires shoot-don't shoot training. But not just shoot-don't shoot but brandish-don't brandish.

In other words you need to be ready at an instant to display either your SD weapon or when to display empty hands.

We know that in active shooter situations, first responders are going to respond, and there may be other people out there carrying for self defense.

In active shooter incidents you're going to face the three threats mentioned and need to be able to respond to each accordingly.