Part of it is you have to think about it enough you make the decision ahead of time.All of that is true. However, all the training in the world is not going to help anyone get in the door if they lack courage.
Some folks talk a good line about what they would do in a situation but till it actually happens, nobody knows what they will do when the first shot is fired or first punch is thrown at them.
I knew a man in the military once who was about 6' to 6'2" and probably about 180-200. All that weight was all muscle. He was a walking wall of steel.
He talked tough all the time. Every other word was an F-bomb. He liked to intimidate people.
He was like that till one day, a field mouse ran underneath his chair. I use to think he had a deep voice till he started shrieking like a little girl.
I kid you not. He was pissing his pants and shrieking in terror as he jumped on his chair to escape the little furry thing.
Everyone of us that saw it about pissed our pants from laughing so hard. From that time on, he didn't act so tough. He was emotionally castrated.
I was one of his biggest tormentors after that.
We would be approaching each other in the hallway from opposite directions. After I got close to him, I'd jump back and shout, "Look out there's a mouse!"
He'd keep walking with his head down and mumble, "that's real funny."
I've interjected some levity in the subject matter but it's true. Nobody knows how they are going to react until they are put in that situation.
A retired police Captain was telling me about the problems he experienced; actually it was the wussy cops in his department. They acted nervous and afraid to go on some calls.
Now, I'm not trying to be unduly harsh but I said, "that's probably because, you hire people that have never been in fist fights."
He nodded his head in agreement.
During WWII, the German army tried to recruit soldiers, that had experience as poachers, into the sniper ranks. There must have been something to that. Imagine any army forgiving its personnel for pre-service crimes to use those same skill sets in the service of their country.
Poachers know what it is like to hunt and to be hunted - by game wardens. A Wildhüter (game keeper) in Nazi Germany was probably a man that you didn't want to cross whilst poaching the Reich's deer.
Do they ever ask potential cops in a job interview if they have ever been in a fight or been shot at?
Not bragging during training but when alone actually thinking “What am I going to do?”
If your first truthful conversation with yourself is on the school parking lot it’s too late.