| 21. | Some of the discussion is focusing only on air traffic control.
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| 22. | A new air traffic control tower was opened in October 2005.
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| 23. | Such failures have become common to the frayed American air traffic control system.
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| 24. | Nothing else was discussed with air traffic control for 16 minutes.
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| 25. | An air traffic control tower was constructed at Ryan in 1993.
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| 26. | There is no air traffic control for much of the region.
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| 27. | These accidents helped pave the way for modern Air Traffic Control.
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| 28. | The cause was found to be errors by Air Traffic Control.
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| 29. | The five controllers are from the Miami air traffic control center.
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| 30. | This proved useful in both weather and air traffic control radars.
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