cracked:

If you’ve been on an airplane in the last few decades, you’ve had a close encounter of the TSA kind. We’re all annoyed about taking our shoes off, throwing out our sweet pocket machetes, and emptying all of our delicious exotic liquids just to please The Man. We sat down with someone who spent most of the last decade working for the TSA, and he explained to us just what it was like being inside that most hated of organizations.

8 Things You Don’t (Want To) Know About TSA Checkpoints