Fallout’s big stunt was an intense helicopter chase wherein Cruise dangled thousands of feet in the air, took control of the copter and then flew it.
The big story surrounding Mission: Impossible – Fallout was that Tom Cruise had broken his ankle during a stunt, forcing production to take a hiatus so Cruise could heal up.
You actually see that exact moment where it breaks in the film (it was the only take), but Cruise wasn’t content to take it easy when he was back on set.