They are trained in advanced reconnaissance and with an unusual degree of independence so they can serve as scouts and snipers far from Imperial support. Their armor is lighter than standard stormtrooper suits, with protection only covering the upper body and head, while their helmets incorporate a boosted communication system and enhanced macrobinocular viewplate for spotting targets at long range. On Endor, scout troopers piloted swift 74-Z speeder bikes to patrol the area around the Death Star II's shield generator.[36][39] Shock Troopers are an upgraded variant of the Clone Shock Troopers, the red-armored clone troopers, who first appeared in Revenge of the Sith (2005).