That's a horrible question. Lol
I'm sure you think it came off as smart but it really didn't this time.
The real question is did they voluntarily choose to do air work?
The company likes to code people as air to reduce the number of drivers listed as in use for a certain day, but at the end of the day, if they showed up to work for 8 hours of their work, it does not matter if they were picking up hundreds of thousands of dollars in ground merchandise, or delivering amazon air mailers.