I almost forgot!

About a year ago, a TSA screener tried to confiscate me memory stick as it was decided that it was a lighter and they are banned. When I tried to explain that it was in fact a memory stick his tone became less pleasant. Whereupon I made the mistake of saying that if it is confiscated there is no point in my making the trip. This further added to the agent's paranoia, becoming less pleasant.

I don't understand why the concept of needing business related materials for a business trip is so difficult to grasp.