The FAA is starting to increase its warnings to air traffic controllers . Last week, we saw warnings issued over a shortage of controllers, which led to disruptions across several airports in key locations such as Dallas, Newark and Chicago.

Although the issue was resolved, shortages are resuming, and on Sunday, they caused thousands of delays across the United States.

As the government shutdown continues, passenger concerns are growing, especially with Thanksgiving looming . The FAA has issued warnings that the situation may only get worse from here.

Here's a closer look at the flight disruptions that occurred on Sunday and how they affected major airports and airlines across the United States.

The FAA Issued Another Warning Over Staffing Issues At Several U.S. Airports On Sunday

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