I suggest you all buy and read "Enemies Foreign and Domestic" as our friend APX posted in another thread. it's a fictional novel but I've never read something that was so dead-on. also, the author has a long military history and was a SEAL. the whole book is riddled with awesome tips for opsec, escape and evasion, insight into the tactics used by many of the alphabet-soup agencies and SF. it's basically a version of Patriots that's actually realistic.
I find this relevant because the book mirrors the reality of our current situation, and it'll only take one seemingly small catastrophe to start the engine of rapid and OVERT loss of liberty (as opposed to this gradual "boiling frog" thing that we're so used to).