This was my first year taking the ATSA, and I took it through PSI; not sure if everyone does. However, if you are taking it through PSI, just make sure you don't wear a hooded top. Or at least make sure you wear something under it without a hood. They have places where you can hang coats and such, but a chick wearing a hooded t-shirt couldn't enter the testing room until she removed the top and she didn't have another shirt underneath. Not sure what happened with her, as I entered the testing room before she figured it all out.for those of you who have taken the test, how was your attire? did you come relaxed or did you dress for success?