They also have to maintain air traffic control, parts of the national weather service, parts of the NTSB, the FAA… lots of externalities in the aviation world.

They also have to maintain air traffic control, parts of the national weather service, parts of the NTSB, the FAA… lots of externalities in the aviation world. (Even before you start thinking about the fact the people who make airliners are the same people who build out Air Force.