FOX’s ultimate celebrity social experiment, Special Forces: World’s Toughest Test, returns for a fourth season, enlisting a new 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 Morocco and will endure the extreme circumstances of urban warfare. New this season, some recruits arrive in pairs consisting of spouses and family members, but will compete individually. With nothing more than a radio kit and each other, the recruits must communicate effectively and move quickly as they work together to identify fallen comrades in a casualty evacuation test behind enemy lines. Then, when their team’s mission is compromised, they must cross rooftops to make it to extraction.