Newark, air traffic control
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Sunday's incident marks the fourth time in the past two weeks that technical problems have disrupted air traffic at Newark.
Moving air traffic controllers means retraining them on the quirks of a new facility, and the process can take years.
Several times over the last year, Newark controllers lost radar or radio service, leaving them unable to talk with planes they were tracking.
Transportation Secretary Sean Duffy tells "CBS Mornings" it will take months to restore normal operations at Newark Liberty International Airport.
Caught in the middle of the issues at Newark is United Airlines, which is the most active airline at the New Jersey airport. While the problems lie with the FAA system, the airline is where people often aim their frustrations over cancellations and delays.
The safety nightmare continues at Newark Liberty International Airport, where all air traffic control will be manned by just one fully qualified person during its busiest time tonight, The Post can exclusively reveal.