Manage the operation of communications, detection, and weapons systems essential for controlling air, ground, and naval operations.

Provide services to ensure the safety and comfort of passengers aboard ships, buses, trains, or within the station or terminal. They perform duties such as greeting passengers, explaining the use of safety equipment, serving meals or beverages, or answering questions related to travel.

Transport students or special clients, such as the elderly or persons with disabilities. They ensure adherence to safety rules. They assist passengers in boarding or exiting.

Provide personal services to ensure the safety, security, and comfort of airline passengers during flight. They greet passengers, verify tickets, explain use of safety equipment, and serve food or beverages.

Paint, coat, or decorate articles such as furniture, glass, plateware, pottery, jewelry, toys, books, or leather.

Paint walls, equipment, buildings, bridges, and other structural surfaces, using brushes, rollers, and spray guns. They remove old paint to prepare surface prior to painting. They mix colors or oils to obtain desired color or consistency.

Sort mail for shipping and deliver the mail on established routes on foot or using a vehicle.

Operate radio, telephone, or computer equipment at emergency response centers. They receive reports from the public of crimes, disturbances, fires, and medical or police emergencies. They relay information to law enforcement and emergency response personnel. They maintain contact with caller until the personnel arrive.

Accommodate hotel, motel, and resort patrons by registering and assigning rooms to guests, issuing room keys or cards, transmitting and receiving messages, keeping records of occupied rooms and guests' accounts, making and confirming reservations, and presenting statements to and collecting payments from departing guests.

Assist patients in obtaining services, understanding policies and making health care decisions.