The Federal Aviation Administration issued a rare nationwide ground stop on Friday, suspending all departures and landings at airports across the United States for slightly more than four hours. It was the longest nationwide shutdown and only the second nationwide ground stop covering all departures since the September 11, 2001, terrorist attacks. Homeland Security Secretary Markwayne Mullin and Transportation Secretary Sean Duffy appeared to suggest that older technology, overwhelmed by data after new technology was introduced, caused the outage. The halt affected air traffic nationwide before operations resumed after just over four hours.

Editorial · Finance

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