Well since I don't know the guy, I can only go by what's in the news. But if someone knows he is subject to drug testing 24x7, and he knows getting caught will have a negative effect on his employment, and that's not enough to keep him from taking illegal drugs, and he gets caught more than once, and he takes the drugs knowing that he's on probation from a previous drug charge, then I think something is wrong with his ability to control his behavior.