Transportation Secretary Sean Duffy said Sunday that the government shutdown, now in its sixth week, would continue to cause flight delays, cancellations and closures amid air traffic control staffing shortages.

Transportation Secretary Sean Duffy said Sunday that the government shutdown, now in its sixth week, would continue to cause flight delays, cancellations and closures amid air…

Air traffic control staffing has been under a microscope since the shutdown started, but it's not necessarily the main driver of flight delays.