Interestingly enough, the one time I have ever been to St. Louis (for the 2005 Sox-Cards interleague series), I had a horrible experience with the TSA staff at the St. Louis airport. This woman, who was checking ID's and allowing people into the security line, starting screaming at me because I had taken my purse out of my laptop bag to procure my ID, and was putting it back in (which takes all of 3 seconds).

Her: "YOU NEED TO STEP OVER TO THE SIDE"
Me (very groggy, as it was early AM): "huh?"
Her: "I SAID MOVE OVER TO THE SIDE!"
Me: *Confused*
Her: YOU CAN PUT THAT AWAY OVER THERE

It took every ounce of self control I had not to yell right back at her, but I didn't want any problems and just wanted to get home. I guess it's probably good that that is the worst experience I've ever had with the TSA (knock on wood), but I was appalled at the time that one of their workers would be so condescending and rude (not to mention loud) with no provocation whatsoever.