Also called drones over U.S., surveillance society is a term that describes future reality of U.S. skies in which unmanned drones are as common as helicopters and airliners. The FAA took steps toward widespread U.S. drone flights in early 2013 by proposing the creation of six drone sites around the country.

Privacy advocates worries that a proliferation of drones will lead to routine monitoring and tracking of the movements of Americans. The military has come to rely heavily on drones overseas. Drones are ideal for tasks that are too dirty, dull or dangerous for manned aircraft. Drones, which range from the size of a hummingbird to the high-flying Global Hawks that weigh about 15,000 pounds without fuel, are also often cheaper than manned aircraft. The biggest market is expected to be state and local police departments.