Amena was working the problem. "Why didn’t they tell us? We could have ... Unless they didn’t know it was there. They said they were unconscious when they were brought aboard." The consternation in her expression deepened. "Did Ras’s implant tell him to attack you? Or just make him so confused that he shot at the first person who walked in the door? These implants are obviously supposed to incapacitate them if they tried to escape, to keep them under control—"