One Second After – EMP/CME knowledge. Instead of a small band of survivors, this is about a small community around 7000, up to 10,000 after refugees arive. The necessary evils of governing including defense, distribution of food, water, distribution of communial duties such as burial, etc. Also has accurate stats on what to expect in terms of medical/survival rates. Made an impact on me as to just how fast a community/group would have to react and what they should have prepared for in advance.