I was flying over one of the branches of the Ozarks yesterday almost half a mile out, over open water and without any obstruction between me and the drone (though it was too small to see at that distance) and I got a couple 'weak video signal' warnings and then video cut out. I used the map to turn it around and start heading back and the video came back after a few seconds but it seems strange that it would cut out like that considering the conditions I was flying in. Any ideas why that might have happened? Nothing else strange had been happening with the drone at all.