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.

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 like Newark International.

The CEOs of the five largest U.S. airlines on Thursday plan to back the Trump administration's proposal to spend tens of billions of dollars to reform the aging air traffic control system and boost hiring,