How the U.S. Navy handled a tumultuous week

The U.S. Navy has had a tumultuous week, beginning with a request from the captain of the USS Theodore Roosevelt to evacuate most of his ship due to a COVID-19 outbreak, and culminating with the resignation of the Navy secretary who fired him. Nick Schifrin talks to retired Adm. Michael Mullen, who served as chairman of the Joint Chiefs of Staff during the George W. Bush and Obama administrations.