Correct me if I'm wrong, but doesn't "drone" simply refer to an unmanned and remotely controlled aircraft? If so, being a drone doesn't explain how such a craft

Correct me if I'm wrong, but doesn't "drone" simply refer to an unmanned and remotely controlled aircraft? If so, being a drone doesn't explain how such a craft could defy what (the general public) knows about the physics of flight. Drone or not, how does something descend from 60,000 feet to 500 feet in a few seconds, as the story says?