Michael J. Coumatos is a former U.S. Navy test pilot, ship's captain, and commodore; U.S. Space Command director of wargaming; and a government counterterrorism advisor. William Scott is a retired bureau chief of "Aviation Week and Space Technology" and a nine-year Air force veteran who served as aircrew on nuclear sampling missions. He is a six-time Royal Aeronautical Society "Journalist of the Year" finalist, and won the Society's 1998 Lockheed...