Holy Shit, and he's never been in trouble before? When he fucks up, he really fucks up!!! Well, the only thing you can do is be there for him and write/visit him. I'm sure he is going to have a lot of haters or people that are going to forget about him. Sometimes, it's great how life gives you a second chance. Hopefully, he'll learn from all this and when he is out, maybe he can educate others who are drinking and driving.