If he has the fortitude to lose 30 lbs. then the military will be easy. I wish he went Army ADA so I could have the honor of training him. (Flag wave emoji)
Prayers. Does he understand that the Security Police stand outside in extremely cold weather guarding aircraft as in Minot aFB ND? And the heat of the day as in Altus AFB, OK? Tell him to go into intelligence and it's a day job, he can go to college at night and prepare for a medical degree in medicine. He's smart and can probably take 2-3 courses per semester and by the time he finishes four years he'll have his BS. I heard of a guy that had no high school diploma, joined the USAF, got his GED, went to night school and obtained a BS and Masters and was studying for his PhD. All paid for by the military, don't know where the guy is now but he did good...well.