It's official: The Federal Aviation Administration (FAA) has given Hollywood the green light to use drone aircraft (properly known as unmanned autonomous vehicles, or UAVs) in the United States. On Thursday, the FAA granted exemptions to six different production companies that allow them to use drones for commercial purposes. Before this, the only for-profit use of drones legally permitted in the United States was for a handful of oil- and energy-industry projects in the Arctic.