Drive a light vehicle, such as a truck or van, with a capacity of less than 26,000 pounds gross vehicle weight (gvw), primarily to deliver or pick up merchandise or to deliver packages. They load and unload vehicle.

Drive a tractor trailer combination or a truck with a capacity of at least 26,000 pounds gross vehicle weight (gvw). Their activities include unloading trucks. This job requires a commercial drivers' license.

Drive truck or other vehicle over established routes or within an established territory and sell or deliver goods, such as food products, including restaurant take out items, or pick up or deliver items such as commercial laundry. They also take orders, collect payment, or stock merchandise at point of delivery. Includes newspaper delivery drivers.

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.

Drive bus or motor coach, including regular route operations, charters, and private carriage. They assist passengers with baggage. They collect fares or tickets.

Drive ambulance or assist ambulance driver in transporting sick, injured, or convalescent persons. They assist in lifting patients.

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.

Ensure the safe takeoff and landing of commercial and military aircraft. Their duties include coordination between air traffic control and maintenance personnel; dispatching; using airfield landing and navigational aids; implementing airfield safety procedures; monitoring and maintaining flight records; and applying knowledge of weather information.

Control air traffic on and within vicinity of airport and movement of air traffic between altitude sectors and control centers according to established procedures and policies. They authorize, regulate, and control commercial airline flights according to government or company regulations to expedite and ensure flight safety.

Pilot and navigate the flight of fixed winged aircraft on nonscheduled air carrier routes, or helicopters. They requires commercial pilot certificate. Includes charter pilots with similar certification, and air ambulance and air tour pilots.