Special Forces: World's Toughest Test

The recruits must repel out of a military-grade helicopter.

The recruits escape a sinking plane and fight against each other in a boxing match.

The recruits work together to save lives and survive extraction.

The recruits navigate through tight tunnels and trenches.

The recruits race in the brutal heat and backwards dive in sync.

The recruits sidestep above a 200ft high canyon floor, then compete in one of the most physically brutal tasks of the season.

The recruits struggle to communicate as chaos ensues during hostage rescues.

Extreme endurance meets heartfelt emotion.

The recruits are subjected to a multi-stage process of interrogation and are placed under gradually increasing duress.

FOX's ultimate celebrity social experiment, Special Forces: World's Toughest Test, returns for a third season, enlisting a troop of household names to endure some of the harshest, most grueling challenges from the playbook of the actual Special Forces selection process. This time around, the recruits will be training in Wales, the home of British Special Forces Selection, and will endure the harsh reality of ocean warfare. On their way to base, and with hardly any time to get acquainted, the new recruits are faced with their first challenges which include taking a mighty leap out of a moving boat onto a helicopter, testing their endurance by treading water as a group and bungee-jumping off a 12-story viaduct.

Challenges include treading water as a group and bungee jumping off a 12-story viaduct.

The recruits are pushed to the test once again and face new challenges including escaping a boat crash, an intense combat exercise, battling against each other in an intense boat race, and hauling 500 pounds worth of supply kits up a steep mountain.

The recruits face new challenges including escaping a boat crash and an intense combat exercise.

Recruits must unlock a safe in a gas-filled room, perform a helicopter insertion into the blistering cold sea, and select recruits are forced to bury their teammates into coffins after cheating in a previous challenge.

The recruits must trust each other in order to survive.

Contestants take on a search-and-rescue course, crawl over a rope spanning a canyon and face a brutal three-stage endurance test

The recruits undergo a search-and-rescue course, crawl along a rope suspended over a canyon, face a grueling three-stage endurance test in the mountainous terrain, and a brakeman rope challenge.

Entering their final week of Selection, the remaining recruits are challenged mentally to harness their vulnerability and shift their mindsets to overcome the final tasks. The recruits fight the "Redman," escape an ambush and evade an enemy hunter base, and approach the most terrifying phase of the course, resistance to interrogation. As the recruits experience the most challenging part of their journey, they must try their best to conceal that they have been working with the Special Forces in order to successfully pass Selection.

As the recruits experience the most challenging part of their journey, they must try their best to conceal that they have been working with the Special Forces in order to successfully pass selection.

A new troop of 14 household names face the harsh reality of winter warfare training.

The remaining recruits are tasked with submerging themselves in icy water.

The celebrity recruits must safely protect a convoy under a surprise attack.

The remaining recruits must navigate treacherous terrain while carrying a 220-pound boat.

The remaining recruits are taken to the top of a mountain range and must crawl across a ravine.

The recruits face the most dangerous task yet -- a helicopter survival drill.

The recruits go to a remote mountain range where they must pull sleds through dangerous terrain.

The recruits are taken into the final stage of selection: 12 hours of military-grade interrogation.

Sixteen celebrities face challenges from the playbook of the Special Forces selection process.

Sixteen celebrities face challenges from the playbook of the Special Forces selection process.

The recruits face an emergency escape drill; tensions rise as the recruits confront each other.

The celebrity recruits must have trust in each other and in their leaders in order to survive; each recruit must rely on another to break their fall from a skyscraping cliff.

The remaining celebrity recruits reach the halfway point in their 10-day journey, and the tasks are only getting harder; the recruits face a skyscraping tactical repel and a high-pressure simulation that puts one recruit over the edge.

The celebrity recruits learn a valuable lesson in using fear to inform and help, rather than allowing it to overpower their thoughts; a pole crossing challenge and a fire run.

The DS test the remaining recruits with a chemical warfare challenge; celebrity contestants reveal their personal stories that led them to signing up for the show.

The recruits find themselves back in the water with one of the most physically challenging tests thus far; as the group forms a deep emotional bond with one another, one recruit has a shocking exit.

The final group of remaining recruits attempt to go behind enemy lines without being captured, and face tough lessons of survival, leadership and how to decipher a map.

The last remaining recruits face their final phase -- enduring the mental duress of enemy interrogation.