Transportation Secretary Sean Duffy predicted Tuesday that there could be chaos in the skies next week if the government shutdown drags on and air traffic controllers miss a second paycheck. There have already been numerous delays at airports across the country — sometimes hours long — because the Federal Aviation Administration slows down or

Transportation Secretary Sean Duffy said Monday the Trump administration would shutter the U.S. aviation system if he thought an ongoing government shutdown was making it unsafe to travel.

US Transport Secretary Sean Duffy warned Tuesday that the government shutdown will cause air travel chaos if it lasts another week, worsening staff shortages, snarling airport lines and closing down s...