The emotional clip features “The Valley” star Brittany Cartwright fighting tears as the intensity of the training mounts, while other recruits scream as they confront fear-inducing drills.

Special Forces' season 4 trailer reveals Kody Brown falling, Brittany Cartwright crying and intense challenges like tightrope ...

Other athletes in the competition include NFL alum Randall Cobb, Olympic soccer player Christie Pearce Rampone and retired ...