Sixteen household names arrive in the desert, about to endure some of the harshest, most grueling challenges from the playbook of the actual Special Forces selection process.

Celebrities endure some of the harshest, most grueling challenges from the playbook of the actual special forces selection process; their goal is not to win votes and face eliminations -- for them it is just about survival.

The recruits are faced with an emergency escape drill; tensions begin to arise as the recruits confront each other over disagreements and the pressure of the selection process becomes too much to handle for some.

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 recruits face a skyscraping tactical repel and a high-pressure simulation.

The celebrity recruits learn a valuable lesson in using fear to inform and help.

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