This is specialized operational and clerical work on an assigned shift at Miami International Airport or a smaller airfield operated by the county. Employees in this class perform a variety of specialized airport service functions in support of airfield operations. Duties include operation of a large passenger service vehicle for use in transporting passengers from various areas of the airfield to the terminal, collecting and compiling information concerning projected passenger arrivals on international flights and operating closed circuit television monitors to assist in maintaining passenger safety and airport security. Some incumbents in this class are responsible for performing a variety of operational duties at an auxiliary airport or smaller airfield including conducting airfield safety inspections, collecting landing fees, providing airport security, and assuring compliance of airport tenants with established rules and regulations. Some judgment is required in meeting emergency situations and in enforcing established rules and regulations. Supervision is received from an administrative superior who reviews work through personal conferences and written reports for conformity with departmental rules, regulations, and procedures.