Kody Brown and Brittany Cartwright are among the reality stars who are facing big challenges in the first look at season 4 of Special Forces: World's Toughest Test. "In Special Forces, the weak do not belong," ex-special force operative Jovon "Q" Quarles can be heard saying in the opening of the Monday, August 18, teaser trailer. "So you're going to get a crash course in what it's like to be a part of our reality." The trailer then cuts to Eric Decker standing backward off the edge of a cliff as his wife, Jessie James Decker, looks on in horror.