Watch This Incredible Mid-Air Skydiving Rescue
This skydiver had a seizure during freefall and was unconscious for nearly 30 seconds while his instructor tried to save him. The footage is amazing.
From the YouTube description:
At around 9000ft I have a seizure while attempting a left hand turn. I then spend the next 30 seconds in free fall unconscious. Thankfully my jumpmaster manages to pull my ripcord at around 4000ft. I become conscious at 3000 ft and land safely back to the ground.