SAS: UK

Twenty recruits prepare to enter Jungle Hell, the toughest phase of SAS selection. First, they have to traverse the trainasium, suspended 50 feet above the ground, after which they must complete a 200-foot abseil headlong into a waterfall.

The recruits take part in extreme hand-to-hand combat; a breach of camp discipline leads to a beasting; a recruit gets stranded while trying to descend a waterfall.

In the Vietnamese jungle, the group attempt a 200-foot abseil into a dark bat-infested cave; in a bustling market, the recruits must take down an armed gunman in a crowd of civilians; the contestants face each other in a game of murderball..

The remaining 11 recruits face a hostage rescue mission; the second challenge is a punishing head-to-head team ammunition supply race in the jungle.

The recruits' will to survive is severely tested with an extraction task used in the Vietnam War; the contestants must make it through a survival task that requires navigating through the jungle while being pursued by hunters.

The seven remaining recruits are ambushed by a hunter team behind enemy lines. Handed over to interrogators for questioning, the recruits must endure psychological and physical punishments designed to break their will and force a confession.