The AA of the Sky
Flights can be pretty stressful for some people, and something about hearing the reassuring voice of the friendly pilot makes people more relaxed and comfortable during the flight. The last thing you want to hear from the person flying your plane is that they have a drinking problem, right?
Now, are the passengers worried that Dave might toss back one too many martinis and crash the plane somewhere in the plains of Oklahoma while en route to Phoenix? Or are they uncomfortable that Dave decided to be open about his addiction? Maybe he was told in his AA meetings to be honest about his struggles.