Originally Posted by
ATOBTTR
Depends on the airport. I’ve routinely been behind crew at SEA (particularly Asian carrier crew for Korean Air, Hainan, and Asiana) and have often had TSA pull them up in front of me in the line.
The Known Crewmember checkpoints at SEA are separate from the passenger screening but non-US crews wouldn't be able to use them and would have to go through with the passengers.