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.

As air traffic controllers manage thousands of daily flights nationwide, they’re dealing with decades-old technology and significant staffing shortfalls. To address these challenges, the Department of Transportation is set to announce a multi-billion dollar plan to modernize the country’s air traffic control infrastructure.