Air-traffic control
a government service that facilitates the safe and orderly movement of aircraft within and between airports by receiving and processing data from radar and devices that monitor local weather conditions and by maintaining radio contact with pilots.
Contemporary Examples
Few occupations carry the unique sort of physiological assault that air-traffic control does.
An Air Traffic Controller Speaks Bob Richards April 29, 2011
noun
an organization that determines the altitude, speed, and direction at which planes fly in a given area, giving instructions to pilots by radio
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