A professional who monitors premises of public transportation terminals to detect crimes or disturbances, using closed circuit television monitors, and notifies authorities by telephone of need for corrective action. Respnsibilities include:

• Observes television screens that transmit in sequence views of transportation facility sites.
• Pushes hold button to maintain surveillance of location where incident is developing, and telephones police or other designated agency to notify authorities of location of disruptive activity.
• Adjusts monitor controls when required to improve reception, and notifies repair service of equipment malfunctions.