The General Atomics MQ-9 Reaper (originally the Predator B) is an Unmanned Aerial Vehicle (UAV) (also known as a Remotely Piloted Vehicle (RPV)) developed by General Atomics Aeronautical Systems (GA-ASI) for use by the United States Air Force, the United States Navy, the Royal Air Force, and the Italian Air Force. The MQ-9 is the first hunter-killer UAV designed for long-endurance, high-altitude surveillance.