To walk away. Walk as far as you want, you will never be away. There is no such thing. It is only the beginning.
LTS, I carry scars and metal around because I assessed the situation before pulling the trigger. I still think, right now, 45 years later, I did it right. And I still think about those times. I wasn't in "combat," with the known expectation of action, and I was not in an "agressor" task, so I had not the mental preparation beforehand to psyche me up. Training tells.
I think d13st knows his ****, whether it has hit the fan or not. He reminds me of a couple of the SAS fellows who beat up on us for 6 weeks in England.