If you're traveling internationally this Friday afternoon, consider this a heads up: computerized customs systems are down at airports across the United States this afternoon.

We're hearing that this has led to huge lines and VERY long waits at several US airports.

We've seen tweets online from passengers across the country expressing their frustration as they wait in growing lines:

Kennedy Airport acknowledged the issues in a tweet Thursday afternoon, saying that agents have been forced to process travelers manually through the system because of a computer issue.

This is likely to impact the arrival and departure times for some international bound flights tonight as well as airline grapple with passenger delays. It's best to check ahead with your airline.

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