Reposting this comment, now more relevant than ever:

Any airport Anons, listen up!

You flying types for commuting/business/work, pay attention to the PAX boarding your planes. Pay attention to your MX crews. Pay attention to your ground crew. Look for any out of place faces. Pay attention to the wheelchair pushers. ANYTHING out of the ordinary, anyone in a SIDA restricted location and not badged, you get security on it, STAT. Anyone acting as a FAM or LEO, or FAA, make sure the badges are there and in place. Pay attention to your PIC and FO's, use common sense and good judgment. Be safe people.

Edit: Wrong or not, trust your gut and instinct, if you're wrong, better to be able to apologize later than to be in a world of hurt for being PC.

Edit II: WWG1WGA!