Did you see that video of the guy who had a seizure while skydiving? He said it was possibly the scariest moment of his life! At around 9000ft he had a seizure while attempting a left hand turn. Then he spent the next 30 seconds in free fall unconscious. Thankfully his jumpmaster managed to pull his ripcord at around 4000ft. He then became conscious at 3000 ft and landed safely back to the ground.