Special Forces - Ultimate Hell Week: The recruits have to swim through the quarry cave and underwater tunnel.

SINOPSIS

Andrew Flintoff brings the contenders home for the final challenge, as they undertake 48 hours of gruelling training with the British SAS. The six recruits are confronted with an assortment of intense physical and mental challenges that few serving soldiers are selected for and even fewer succeed at. At the end of the training, a final winner is chosen. Last in the series.