The problems that disrupted flights at New Jersey’s largest airport this spring could be repeated anywhere across the country, so Transportation Secretary Sean Duffy is trying to sell Congress on his plan to overhaul the nation’s air traffic control system that will cost “tens of billions.

The U.S. Department of Transportation revealed new details Wednesday about its timeline to improve Newark Liberty International Airport's air traffic control system.Secretary Sean Duffy previously said he hoped to activate a new fiber line to improve Newark's air traffic controller communication by the end of May.

Transportation Secretary Sean Duffy said the Newark airport is slated for multiple upgrades after two communication blackouts in May caused high-profile disruptions for pilots and passengers. He said officials have been working since late April to address safety concerns while placing 16 new air traffic controllers in training to increase staffing numbers.