Operate machines and equipment to record, synchronize, mix, or reproduce music, voices, or sound effects in sporting arenas, theater productions, recording studios, or movie and video productions.

Set up, operate, and maintain the electronic equipment used to transmit radio and television programs. They control audio equipment to regulate volume level and quality of sound during radio and television broadcasts. They operate radio or television program transmitters.

Set up and operate audio and video equipment including cameras, microphones, sound speakers, video screens, projectors, video monitors, spotlights, sound recording equipment, mixing boards, and related electronic equipment for concerts, sports events, meetings and conventions, presentations, and news conferences.

Plan, coordinate, or edit content of material for publication. They review proposals and drafts for possible publication. Includes technical editors.

Direct and orchestrate instrumental or vocal performances by musical groups, such as orchestras or choirs.

Officiate at competitive athletic or sporting events. They detect infractions of rules and decide penalties according to established regulations. Includes all sporting officials, referees, and competition judges.

Compete in athletic events, trainning to achieve optimal proficiency in sports and other forms of physical exercise.

Direct and coordinate activities of personnel engaged in preparation of radio or television station program schedules and programs, such as sports or news.

Design special exhibits and movie, television, and theater sets. They study scripts, confer with directors, and conduct research to determine appropriate architectural styles.

Plan and erect commercial displays, such as those in windows and interiors of retail stores and at trade exhibitions.