An enormous amount of factual information, much of it hardly known, is packed into this thick book describing U.S. space intelligence gathering activities. Burrows, a journalist who has written on space and aviation for two decades, has clearly talked to many people and burrowed many facts. One feels overwhelmed by the data and impressed by the technical capabilities this country has developed. There can be no question that various forms of "black" information play a major role in our evaluation of Soviet military capabilities as well as other worldwide activities. The National Reconnaissance Office which, it is said, officially does not exist, had a budget of $5 billion in 1985. Much of what is presented in this lively book will be useful to more analytically oriented scholars.