Skydiver Luke Aikins is one of the most experienced skydivers in the world. He made his first tandem jump when he was only 12 years old, and has gone on to make over 18,000 jumps - in addition to working as a stuntman on Iron Man 3 and training elite special forces.
Now, he will attempt his most difficult and dangerous task - jumping out of a plane without a parachute. He will leap out at 8,000 metres, relying only on being able to land in a small net on the ground.
Mr Aikins admits the stunt could kill him. "If I wasn't nervous, I would be stupid," he says, with a grin.