Oh let him have some fun, don't tell him everything!!!
He's going to have more fun than he can stand, and God forbid he gets a female DI.
Our son would not listen to me and lets just say couldn't help himself and found out the hard way.
When I went through Basic I had all male DI's, but felt sorry for the male companies that had a female DI.
Holy crap we'd come out of the chow hall and would not stick around long cause man the were bad. We always figured they had something to prove.