The Hollywood Burbank Airport drew national attention recently when a shortage of air traffic controllers meant its tower had to close. The lack of controllers is a long-running issue that’s getting worse during the federal government shutdown, and it caused long delays for passengers at the airport.

But when an air traffic tower goes dark, what does that mean for your plane’s landing or takeoff? Who's monitoring your flight? Should you be worried?

We asked some long-time veterans of the business to explain. Here’s what we know.

How air traffic control works

Controllers give pilots permission to move a plane on the ground and in the air. They can also communicate useful info to pilots while they’re en route to their destination.

Ross Sagun, of Sagun Aviation consulting, a pilo

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