Why Bill Belichick is football's 'greatest tactician'

The New England Patriots have won their sixth Super Bowl. It was a contest between the oldest coach-quarterback duo, Bill Belichick and Tom Brady, and the youngest, the Los Angeles Rams’ Sean McVay and Jason Goff. It was also the lowest-scoring Super Bowl ever. John Yang talks to Washington Posts sports columnist Sally Jenkins about the detailed discipline of the Belichick-Brady "perfect storm."