A method is provided. An unmanned aerial vehicle (UAV) can be operated in an autonomous mode, performing course corrections from sensor data using an object detection processor and a decision processor. The UAV can then enter a hover mode if an override condition is present and enter a remote-control mode once the UAV is in the hover mode. In the remote-control mode, flight control commands can be received via the cellular module so as to position the UAV in response to the flight control command.