Fetter, SteveOver the last 25 years the United States has become increasingly dependent on space-based systems to support its military forces, and this trend is likely to continue for some time. Satellite systems have become an integral part of nuclear deterrence by providing strategic warning of an attack, tactical warning of missile launches, reliable communications between command authorities and nuclear forces, and nuclear explosion detection. Satellites also aid in conventional war-fighting by providing accurate reconnaissance, intelligence, weather, and navigation information.en-USanti-satellite weapon technologiesASATmilitary space systemsBook chapter