Gosh, that would be hard. Son#2 with the gun. He seems to be reasonable and responsible. And he also refuses to become a victim. Trust that he'll be wise with it.
Son#1. Sounds like he took a licking out there. That can be tough. I know I barely came out of it alive. It takes time, especially for men, who have a whole different criteria of self-evaluation, blame, responsibility and constrictions on failure. I hope his revelation comes and he finds his way again.
And you, poor mom, always a mom. Very hard place to be, and that is very understandable.