VIDEO: Machine gun wielding robots to join troops 10/12/2013 - 00:00 A robot, equipped with an M240 machine gun, moves through the darkness until it stops under a stand of trees 100 yards from its squad of U.S. troops. The robot uses thermal imaging to detect enemy combatants hiding up ahead and aims its gun at them.With a single command from its human controller, who is with the squad 100 yards back, the robot opens fire and takes out the enemy, saving the troops from a potentially deadly attack.