Washington Post: Top Secret America -- Air and satellite operations

The warfare- and combat-related air and space activities and operations of the military, intelligence agencies and the federal government. The Air Force is the primary organization here, but the Navy and Marine Corps also fly large air wings, as do Customs and Border Patrol as well as the FBI. The NRO is the national organization responsible for the development and operation of reconnaissance satellites of all sorts. Those air activities primarily involved in intelligence collection are included under technical spying.