SAS Australia

The celebrity recruits are submerged in a vehicle underwater, forcing them to control their panic while holding their breath. They also undertake a covert drill, to test their integrity.

The celebrity recruits face a frightening casualty mission, plunging down a rope from a helicopter hovering above water, to learn how to turn their aggression on and off.

Recruits must identify the weakest amongst the group. These individuals are then tasked with leading teams through a gruelling physical and mental task.