This is a great read on a self defense, stop the threat incident.
Something I got out of the article was "…Earlier this month, the Clark County district attorney ruled that the shooting was a “clear case of self-defense.” So this tells me that at minimum he had to get an attorney and had to go through at least some legal scrutiny. I hope he had USCCA to back him up.
Secondly, it’s a great testimonial to get more professional training.