Book excerpt: The term "Continuity of Government," or COG, runs from the dubious "duck and cover" method of personal protection against the effects of a nuclear explosion to the more serious measures of continual government inventories of grain silos, the Strategic National Stockpile, the uncapping of the Strategic Petroleum Reserve, the dispersal of transportable bridges, water purification, mobile refineries, mobile de-contamination facilities, mobile general and special purpose disaster mortuary facilities. For anyone researching in the field of COG - from Civil Defense to Presidential succession to the various U.S.-based COG operations (Operations OPAL, ALERT, BUSTER, JANGLE. DESERT ROCK, UPSHOT, KEYHOLE, etc.), this book reflects two years of research by the author within the National Archives and Records Administration (NARA). Of interest may be the first 100 pages on the history of COG and also the listing of thousands of COG-related titles that rest on the shelves in NARA for your additional scrutiny.