You really must try to keep up! Matt/Travis has written and published FOUR books, the EFAD trilogy and the standalone novel Castigo Cay, all fantastic. Which one did you read?
I read Enemies Foreign and Domestic. I had seen it for a long time and thought it would be a little hokey. I read history, classics, economics and then throw in a science fiction novel every third book for pure pleasure. I really enjoyed it and it almost reads like a template for what to do if this or that happens. I might pick the second one up if go backpacking this summer.