Drones or Unmanned Aerial Vehicles (UAVs) have become an essential and controversial tool for the U.S. military. Capable of targeted killing, they can be as small as a fly or as large as an aircraft. They can be used to spy on a neighbor, to undergo long reconnaissance missions or to bomb a military compound. Unmanned Aerial Vehicles are changing the way wars are fought. Using fact boxes, diagrams, photographs and specially commissioned, computer-generated colour illustrations, Drones is an exciting, accessible work about the latest in aviation technology.