Aircraft cargo handling supervisors
Direct ground crew in the loading, unloading, securing, and staging of aircraft cargo and baggage. Determine the quantity and orientation of cargo and compute aircraft center of gravity. May accompany aircraft as member of flight crew and monitor and handle cargo in flight, and assist and brief passengers on safety and emergency procedures. Includes loadmasters.

• 2002 employment: 8,900
• Projected 2002-12 employment change: About as fast as average
• Most significant source of training: Work experience in a related occupation

Airfield operations specialists
Ensure the safe takeoff and landing of commercial and military aircraft. 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.

• 2002 employment: 6,100
• Projected 2002-12 employment change: About as fast as average
• Most significant source of training: Long-term on-the-job training

Ambulance drivers and attendants, except emergency medical technicians
Drive ambulance or assist ambulance drivers in transporting sick, injured, or convalescent patients. Assist in lifting patients.

• 2002 employment: 17,000
• Projected 2002-12 employment change: Faster than average
• Most significant source of training: Moderate-term on-the-job training

Bridge and lock tenders
Operate and tend bridges, canal locks, and lighthouses to permit marine passage on inland waterways, near shores, and at danger points in waterway passages. May supervise such operations. Includes drawbridge operators, lock tenders and operators, and slip bridge operators.

• 2002 employment: 4,100
• Projected 2002-12 employment change: A decline
• Most significant source of training: Short-term on-the-job training

First-line supervisors/managers of transportation and material moving machine and vehicle operators
Directly supervise and coordinate activities of transportation and material-moving machine and vehicle operators and helpers.

• 2002 employment: 207,000
• Projected 2002-12 employment change: About as fast as average
• Most significant source of training: Work experience in a related occupation

Parking lot attendants
Park automobiles or issue tickets for customers in parking lot or garage. May collect fee.

• 2002 employment: 107,000
• Projected 2002-12 employment change: About as fast as average
• Most significant source of training: Short-term on-the-job training

Service station attendants
Service automobiles, buses, trucks, boats, and other automotive or marine vehicles with fuel, lubricants, and accessories. Collect payment for services and supplies. May lubricate vehicle, change motor oil, install antifreeze, or replace lights or other accessories, such as windshield wiper blades or fan belts. May repair or replace tires.

• 2002 employment: 107,000
• Projected 2002-12 employment change: Little or no growth
• Most significant source of training: Short-term on-the-job training

Traffic technicians
Conduct field studies to determine traffic volume, speed, effectiveness of signals, adequacy of lighting, and other factors influencing traffic conditions, under direction of traffic engineer.

• 2002 employment: 5,600
• Projected 2002-12 employment change: More slowly than average
• Most significant source of training: Short-term on-the-job training

Transportation inspectors
Inspect equipment or goods in connection with the safe transport of cargo or people. Includes rail transport inspectors, such as freight inspectors, car inspectors, rail inspectors, and other nonprecision inspectors of other types of transportation vehicles.

• 2002 employment: 29,000
• Projected 2002-12 employment change: More slowly than average
• Most significant source of training: Work experience in a related occupation