I hope that there are plenty of others out there, who have my back in case like this.
It Would Have Been a Massacre | Jeffrey A. Tucker

That’s the problem, we DON’T have your back. My weapon is carried to extract ME from the situation alive. If my protecting myself happens to benefit you, great. But I’m not going to stand between you and the shooter to protect you. You alone are ultimately responsible for your life.

We are not trained to be Rambo, we are trained to seek cover and escape.