9/11 First Responder: That day 'hasn't ended' for hundreds of sick workers

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John Feal, a demolition supervisor who worked at Ground Zero and later developed 9/11-related illnesses joins Hallie Jackson on the 19th anniversary of the terror attacks. Feal, who battled pneumonia and then COVID-19 earlier this year, says the events of 2001 and 2020 are harrowing, but tend to "make us all human beings."