I was out on another business trip last week, and took with me "Emergency: This Book Will Save Your Life", by Neil Strauss. The book is a first-person account of Strauss' transformation from a "soft", urban writer, into a trained survivalist. It's a wonderfully engaging story.
Here's the link that put the book on my wishlist: "How to Be Jason Bourne: Multiple Passports, Swiss Banking, and Crossing Borders"
Enjoy!