Boeing engineer George Windsor sat in a small room at a Boeing building in Seattle and picked up an iPhone. After a short series of finger movements and taps, a miniature unmanned aircraft that's about as big as a pizza box started to hover, turn and fly. In some cases, Windsor tapped on locations on a map on the iPhone, and the UAV went to that spot; in other instances, Windsor moved the phone up, down, left and right, and the vehicle moved accordingly.