Good points, Snowdog. I realized world affairs have changed security from what it used to be. But, even when we were much closer to 20, we never had problems.

We never smarted off, and are always polite at border crossing. We answer only the questions that are asked, do not answer for others, and never volunteer info. It's also a good idea to mentally rehearse the questions you will likely be asked, and the answers you will give.