I'm not just talking about possible flight anxiety. He could've recently been prescribed Xanax for a recent bought of stress/anxiety or deperssion over something. Maybe he wasn't even prescribed it but asked a friend or family member for some to calm his nerves and get some sleep. Does that make him a bad person?
And there doesn't need to be a case history of needing Xanax. In many cases of therapeutic drug use, the drug is intended to be taken daily until you taper off it with the hope that it will help your brain return to normal.
1 in 5 Americans will experience some form of mental illness in a given year. You don't think that MAYBE he's a little stressed out right now with trying to catch on with team?
Let me be clear in that I'm NOT saying it's as simple as that but I'm not going to rush to judement either.