FAA, Boston's Logan Airport
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Airport in Maryland is among 40 U.S. airports that could be impacted by flight cancellations, according to a proposed list obtained by CBS News.
The agency is ordering airlines to cut flights by 10% starting Friday, citing safety with air traffic controller shortages amid the government shutdown.
A ground stop at William P. Hobby Airport was expected to last until 6 p.m., while a ground delay at George Bush Intercontinental Airport was expected to last until 9:30 p.m., according to the FAA.