Originally Posted by
tomwht
FWIW, it is not always the U. S. Marshal's Service transporting prisoners. It could be any Federal, state,or local police agency. And it is more likely that one would see a state or local prisoner transport just because of the higher volume of state/local prisoners. Most likely what one sees on a flight is a prisoner captured in one jurisdiction and being transported to the jurisdiction of offense.
Agree (bolding mine). My cousin's husband runs a private prisoner transport service, and does a lot of the above. A lot of times it's via van, but also does air transport.
Cheers.