2101 - Transportation Specialist
2102 - Transportation Clerk / Assistant
2110 - Transportation Industry Analyst
2121 - Railroad Safety Examiner
2123 - Motor Carrier Safety Specialist
2125 - Highway Safety Specialist
2130 - Traffic Management Specialist
2131 - Freight Rate Clerk / Specialist
2150 - Transportation Operations Specialist
2151 - Dispatcher
2152 - Air Traffic Controller
2154 - Air Traffic Assistant
2161 - Marine Cargo Specialist
2181 - Pilot
2183 - Air Navigation Specialist
2185 - Aircrew Technician
2186 - Technical Systems Program Manager