Oh Alb! That is so great. I am so encouraged by your post. I am praying that today is good for YOU, now, post-visit. Try not to think about the what-ifs.
Just for today, he is clear-eyed and making plans.
If he enlists, and it goes well, then great. Sounds like it is his idea, and that is a plus, even though the conditions are a bit questionable. If he tries and it doesn't go well, then he will learn something.
I'm sure the military has heard it all and deals with a lot more than what he can bring.
He is living his life. You are not living it for him. You are standing back and standing down and letting him make his own choices, own successes and own mistakes.
What a gift you are giving him. Blessings and peace and do something nice for YOU today!