In freezing waters with plummeting body temperatures, recruits wait to be rescued by their teammates before they face a test of pure grunt and teamwork. An emotional departure surprises the group.

The fatigued recruits drop from a helicopter into 4°C water carrying 20kg backpacks, before making their way to shore as a group then racing to the top of a mountain. Dripping wet and being lashed with 60km/h winds leaves one recruit in a hypothermic state.