Or read about the legal definition of self defense. And what happens if the combatant withdraws from the fight.
The author of this article may be a decorated war hero, security expert whatever. But that doesn't mean he is giving good legal advice.
You obviously missed what I said at the end about juries, media, public, etc...especially juries.
Oh, the horror, he used “excessive” deadly force after he’d already fatally shot him....