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.

After weeks of chaos, delays and cancellation at the major hub, Duffy claimed there is light at the end of the tunnel.

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