Mr. Smith, (is this his real name or secret survivor agent name?) provided me with an amazing book to prepare myself for the apocalypse! To be quite honest I imagined I would receive a Lifestraw or something similar, but this blew me away and I couldn't be happier. I've done considerable reading on warfare and guerrilla warfare (think Che's manual) and this will be an amazing read and addition to my collection. Mr. Smith hit his mark with this amazing book. Can't wait to get into it!