An aeronautical engineer by training, Seymour J. Deitchman was responsible at the defence Department for research and development support of U. S. efforts in Southeast Asia in the 1960s. He was vice president for programs at the Institute for defence Analysis until 1988. Currently he is a member of the Naval Studies Board of the National Academy of Sciences/National Research Council. He is author of more than fifty open publications on national security. His prior books include Beyond the Thaw and Military Power and the Advance of Technology. He lives in Chevy Chase, Maryland.