When a Cyborg named Chas (Cybernetic Humanoid Assault System) is assigned to the Roughnecks, he is befriended by Higgins, who views the robot as a kindred outsider. Rico (leery of technology as always) doesn't trust Chas, seemingly with good cause. During a particular battle, Chas ignores the fact that Carl's been hit by a Constrictor blast and Rico must step in to save his friend. Because of the incident, Razak recommends that Chas be "deactivated" when the squad returns to base camp. Unfortunately, Chas witnesses that conversation and becomes seemingly paranoid. Eventually, Chas proves himself a Trooper by sacrificing himself for the good of Higgins and the rest of the squad.