U.S. Transportation Secretary Sean Duffy on Thursday will call for tens of billions of dollars to overhaul America’s strained air traffic control system to address crumbling infrastructure, dramatic staffing shortfalls and failing technology.

Transportation Secretary Sean Duffy outlined his ambitions to “radically transform” air traffic control, one of President Trump’s goals since returning to office, as mishaps have caused delays and fewer staff at major airports such as Newark Liberty International.

The CEOs of the five largest U.S. airlines back the Trump administration's proposal to spend tens of billions of dollars to reform the aging system.