A lighting technician has several responsibilities that vary depending on the size of the production. Their main duties include preparing, rigging, and operating lighting equipment. They attach lights to booms, ensure the lights are working properly, and add gels or specials as directed by the lighting designer. For external productions, lighting technicians also de-rig the equipment and return it. They communicate with assistant and technical managers during the process. A lighting technician may also need to assist with sound equipment if the sound technician requires help.