UPDATE from Sec. Sean Duffy: The ground stop is over and operations have resumed. Firefighters from Fauquier County and Prince William County confirm there is no danger to air traffic controllers, and they are returning to the Potomac TRACON. The source of the strong odor was traced to a circuit board that overheated, and it was replaced.

A ground stop has been issued for several major airports in the region after a reported odor at a key air traffic control facility disrupted operations Friday evening.


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