Watched a bit of the downhill women's racing yesterday, was impressed by the camera work. The camera was elevated and partially followed the skier as she raced downhill. I had assumed they installed elevated cameras that were controlled by cables, like those at football games. I'd be astounded if they used drones--the shots were amazing.
Both cable controlled cameras and drones were used. From time to time I saw both in use over the course. I couldn't tell whether the drones were four or six rotor. The camera on cable looked pretty much like what we see in NFL games.