1. 
   Air Traffic Control
   [band] Air Traffic Control is a power pop/rock band hailing from Nova Scotia`s South Shore. The band has a history that predates even its current name. Brothers Kirk and Jordi Comstock made their first foray into music while in elementary school. By 1991, both were playing all-ages shows in ...
   Found op http://en.wikipedia.org/wiki/Air_Traffic_Control_(band)
   
   
2. 
   Air traffic control
   Air traffic control (ATC) is a service provided by ground-based controllers who direct aircraft on the ground and in the air. The primary purpose of ATC systems worldwide is to separate aircraft to prevent collisions, to organize and expedite the flow of traffic, and to provide information and othe...
   Found op http://en.wikipedia.org/wiki/Air_traffic_control
   
   
3. 
   air traffic control
   air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that route airplanes along established airways to airport traffic control centers. There Instrument Landin...
   Found op http://www.infoplease.com/ce6/sci/A0802911.html
   
   
4. 
   air-traffic control
   the supervision of the movements of all aircraft, both in the air and on the ground, in the vicinity of an airport. See traffic control.[6 related articles]
   Found op http://www.britannica.com/eb/a-z/a/34
   
   

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