The candidates' leadership skills are tested in a terrifying cliff abseil and a gruelling survival test, but weaknesses are exposed in the group. Those who succeed are sent to Florida to carry out a spacewalk dive in an underwater marine lab.

Hrají: Chris Hadfield, Kevin Fong, Iya Whiteley, Adrian Dunbar
Režie: Alex Kohler, Gilly Goshawk, Philip McCreery, Helen Sage (2017)