Run, Hide, Fight.
The concept of run hide fight means if you’re in an active shooter event, the first thing you should do is run. You should try to get as far away from that threat as possibly can and keep on going. The second one is hide. So if you're not able to run, then you want to hide and get away from that threat and make yourself not an object of that threat. If that doesn't work, then third, what you want to do is fight back and you want to fight back as hard as you can and with everything that you've got.
