The responsibility of shield operator was assigned to crew members serving on the Galactic Empire's Death Star II battle station, and it involved managing the deflector shield of the station. During the events of 4 ABY, Jad Bean, a Death Star Trooper, held the position of shield operator and flight controller in the Death Star's overbridge control center. At that time, Captain Yorr of the Imperial shuttle ST 321 used comms to get in touch with him, asking for the shield to be turned off. After Bean verified Yorr's coded message, he activated a switch, which in turn sent a signal to the shield generator situated on the moon Endor. This action resulted in a brief deactivation of a portion of the station's shield, allowing ST-321 to proceed through.