Amazon.com told U.S. regulators that it has begun testing deliveries by unmanned aircraft, or drones, in other countries and will divert more research abroad if the government doesn't let it conduct such tests locally. Photo Credit: Getty Images Amazon.com told U.S. regulators that it has begun testing deliveries by unmanned aircraft, or drones, in other countries and will divert more research abroad if the government doesn't let it conduct such tests locally.