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This brings up a point that I hadn't though. I know the drone has be kept within visual line of sight for the purposes of safety and signal. That said if I wanted to fly under a bridge from one side to the other there would be a moment when the drown is out of line of sight. If the flying under a bridge is part of a flight plan then connection with the controller shouldn't be a problem but what if connection with the control AND loss of GPS happens at the same time. My thinking is there may be a brief period while under the bridge where some or all of the GPS signals might be lost. What happens in that situation?