Now masking up at the airport is a law. So get with the program.

Most airports and airlines have been requiring travelers to wear proper face masks while traveling through the terminals and on the planes for months. But enforcing the rule has been difficult at times because there was no federal backing. Now, finally, there is. Effective February 2, a new CDC order requires masks to be worn at all U.S. airports and on other forms of transportation.

The Transportation Security Administration (TSA) will be helping to enforce this new law at security checkpoints and other places in the airport. And their staff is authorized to impose fines for mask scofflaws if need be:

“Depending on the circumstance, those who refuse to wear a mask may be subject to a civil penalty for attempting to circumvent screening requirements, interfering with screening personnel, or a combination of those offenses,” TSA said in a statement.

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