In my Energetic taking pictures training, I was taught to run initial. If you're able to’t run, barricade the door, or start throwing whatsoever you could get on the shooter. I used to be taught the best way to fill bullet holes in young children (my crew practiced on youngster-dimensions https://redgearguru.com/building-a-shelter-in-the-wild-survival-guide/building-a-shelter-in-the-wild/