Israeli startup Urban Aeronautics is testing a flying ambulance drone they hope to release before 2020, Business Insider reports. The vehicle, which is called the AirMule, would be used to perform rescues in places like dense urban environments, where helicopter maneuvering is difficult. The AirMule is directed and controlled remotely and it can fly unpiloted with up to 880 pounds of cargo. Its primary purpose is to assist with rescues during military operations: A much quieter, remotely-piloted aircraft like this would be a game changer for military personnel. Medical evacuations for wounded troops have greatly improved since the introduction of...