The other day he went up 100 times in an airplane and parachuted back down.
Joe Frolick made his 100 skydives at the Warren County Airport in southwest Ohio.
It took him about 13 hours.
Moments after his final jump, Frolick told The Associated Press he was "ecstatic" and feeling great.
The firefighter says his jump-a-thon was to raise awareness and money to fight fire deaths from smoke inhalation.