nuclear engineer in the drugs do not ….? Marina questions

I have a friend who was 18 when he was in rehab for heroin. Tring is to be a nuclear engineer in the Navy. people say it's going to talk all throough worldwide due to the "top secret" issues. will this screw up its Navy? is rising again for a job well-he went by the Members and all that and once he takes a job, will be expelled from his body and everything was done, admitted the car and no commission

It will be no nuclear weapons, no way, no way. ADM is more stringent that allows Nuke. To be perfectly honest, I surprised everyone .. rehabilitation sufficient to eliminate completely, let alone a hard drug like heroin.