I think this guy is going to spend the rest of his life in jail but the story may become rather chaotic as it unfolds in court.
I was struck by the way he gut shot them first rather than going for the center of mass. It seems cruel and perhaps a bit premeditated.
That does raise a question??? The autopsies might be interesting.
The shot in the hip keeps them from getting up but allows him to interrogate them -- something he might have learned from his years as security officer for the State Department.
He might have kept them alive for who knows how many hours to interrogate them. And when he was finished getting what he could from them, just executed them.