The Department of Transportation may close some parts of the airspace if enough air traffic controllers don’t show up to work, Transportation Secretary Sean Duffy said Tuesday.

Apple TV is hoping to keep the planes in the sky with The Flick, a thriller centered on a heroic air traffic controller. Apple Original Films has picked up The Flick, an unpublished short story from writer Matt Hickey set in the high-pressure world of air traffic control.

The Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) will lead the investigation into the incident.

Flight delays linked to the ongoing federal government shutdown continue, with this past weekend marking the worst for air traffic control staffing shortages since the shutdown began, according to a CNN analysis of Federal Aviation Administration operations plans.

Major airlines are providing meals and support to unpaid air traffic controllers and TSA officers during the federal government shutdown.

Transportation Secretary Sean Duffy stressed that the Louisville plane crash was not an air controller issue and announced a 10% reduction in capacity at 40 air traffic control locations on ‘The Will Cain Show.

The Trump administration's top official for transportation offered a fresh warning today that air-traffic controllers are missing out on paychecks due to the government shutdown, and travel problems soon could get worse.