'This is going to take some time': DHS Sec. Mullin on nationwide ground stop
'This is going to take some time': DHS Sec. Mullin on nationwide ground stop

'This is going to take some time': DHS Sec. Mullin on nationwide ground stop

DHS Secretary Markwayne Mullin answers questions on the nationwide ground stop issued by the FAA. He talks about safety precautions, timeframes and more. 

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