I live in the greater Nashville area and have seen the photo of that 35-40 million miler on their board.
I queried some of the staff there about this person. By the way they are the most wonderful lounge staff ever in the AC.
One lady told me he often flies BNA>DFW>LA or SFO> JFK>LHR. Of course as well as other locations.
OF course they were discreet about what kind of work that person does but I would not ask anyway.