Certainly we would never be approved to fly first class. That's not allowed for anybody.
Business class, no, I don't feel I should, but I do feel I spend a lot of time in airplanes and airports and I need to work. I chaired or was head of delegation for more than 70% of the trips I took, so that's a tremendous amount of work, and it's not the kind of work you can get done in the office when you're running your work. So I often end up either sleeping or working.
I find that then it's not unreasonable to be in business class, especially if you're on a trajectory, a travel route, that's taking you for 24 hours in the air, and it's not inconsistent with the guidelines. I don't feel I should volunteer not to. I feel the airplane is part of my office, partly.