I have decided to attempt to go for the "off topic award" of the day.
This really doesn't apply to those traveling or working inside the US but rather outside of the US (particularly in a hostile country).
Let's say you are US military or traveling or working abroad and you get captured or "napped." Through much adieu you are able to get free and to a telephone.
You don't have any phone book.. only what's in your head.
Who would you call for assistance? How would you attempt to help them locate and rescue you? What would you do?