Originally Posted by
anabolism
I've done this at MIA, but not since COVID. I did it just a few days ago at LAX. I already had my AA F BP, which I showed to the agent outside and to the check-in agent inside. I got an escort to the front of the Pre-Check line (which had a number of people in it).
FWIW - In MIA pre-check has moved. Reports are they will escort you to the front of the regular line, not pre-check.