What Happened to Damar Hamlin? NJ Cardiologist Explains Possible ‘Commotio Cordis'

Buffalo Bills safety Damar Hamlin remains in critical condition after cardiac arrest on the field during the game against the Cincinnati Bengals on Monday. NBC New York’s Linda Gaudino chats with Hackensack Meridian Health’s Dr. David Landers who explains the possible and rare cause called commotio cordis.