A FlyerTalk Posting Legend
Join Date: Sep 2002
Location: LAX/TPE
Programs: United 1K, JAL Sapphire, SPG Lifetime Platinum, National Executive Elite, Hertz PC, Avis PC
Posts: 47,152
Absolutely - and you don't even need to submit your information to the TSA.
Buy a fully-refundable ticket online for the airline/concourse where you will meet the incoming flight (best to choose the outbound of the flight you're meeting).
Check-in, receive boarding pass, clear security, meet passengers, leave airport with passengers, refund ticket, flip TSA the bird.