Before Tom Cruise took the risky buisness of filming at 25,000ft up, travelling at 165mph.

Christopher McQuarrie, the director, says that he was in discussion with Cruise about the halo jump sequence for over a year. The risks during the stunt involved the danger of hypoxia and the bends from the lack of oxygen high up in the atmosphere.

So a massive wind machine was built for rehearsals, along with a special helmet.

Actors training in skydiving stunts to be performed in Mission: Impossible Fallout. Aug 2017

Actors training in skydiving stunts to be performed in Mission: Impossible Fallout. Aug 2017

It’s probably the most stand out piece of film set euipment seen before.

Aerial view of Skydiving machine at the studios in North West london.

Clip from Mission Impossible 'Halo Jump' video, shooting at night time.

After this Tom Cruise made over 100 jumps from aircraft at 25,00ft.

Filming of Mission Impossible Fallout continues at outdoor studio film set.