Now remember, when things look bad and it looks like you're not gonna make it, then you gotta get mean. I mean plumb, mad-dog mean. 'Cause if you lose your head and you give up then you neither live nor win. That's just the way it is.

The Outlaw Josie Wales

I am not a fan of taking wisdom from Hollywood, but this one is right on. You lose 100% of the fights you give up on. In an active shooter situation, or an airline hijacking these days, if you can't get out, you are likely to die anyway. Take the chance on removing the threat.

As for the shooting a pistol at range, it just takes practice. I can consistently hit a man sized target at 100 meters from the draw, on double action, with a pistol. Yes, I have had considerable training. But it takes practice. If you are carrying a weapon, and you don't practice with it, you might as well not carry it. Whether it is a stick, a knife or a gun. Or even your hands and feet. If you don't train, you will not react well if the situation arises.