 Due to what we're being told, technical glitch that caused many of the drones to drop from the sky into the lake. It reportedly cost the city about 40 grand for the show, which was operated by one Great Lakes drone company. According to the company, many of the drones lost the GPS signal. When this happens, for those of you who have drones, they usually come back to the operator knowing there's something of a malfunction. But for some reason, these drones decided not to fly home. They simply fell from the sky. No injuries reported.