Yes, here's the official Army site/criteria:

http://www.military.com/Recruiting/C...dical,,00.html

I don't see how he can be in shape at 28 (if he just now decided to join) and having been in before and asked to leave.

The money thing made me scratch my head too; he'll only make $15,000 a year the first year and very little more the next couple; they'll only educate him well if he's staying; they're not going to give him prime education/job skills if he's going to be leaving in 4 years.

I confess I'd have to laugh if he comes to you in a few days and tells you he changed his mind; bet he doesn't get in and tells you he didn't want to be in because of your not wanting him to be.