For those of you that haven't figured it out by now, I'm a compulsive researcher in far too many ways.  I end up all too often with far more research than writing what I was supposed to write.  Having said that I picked up these two books a number of years ago to give a story I was working on more accurate flavor.  It didn't get posted, but it is in the backlog of things that I'm sure I'll polish up, complete and post some day.  Anyway, I found both of these books interesting and informative.  The SAS guide is more technical and the other guide is more hippy gone wild.  They both serve their purposes, especially if you're writing about a disaster-struck modern world.