SI Now: John Mara on ensuring NFL player safety

On Friday's SI Now, New York Giants President and CEO John Mara discusses his role on the NFL's Health and Safety Committee, and their effort to take head shots

On Friday's SI Now, New York Giants President and CEO John Mara discusses his role on the NFL's Health and Safety Committee, and their effort to take head shots out of the game and ensure that other safety precautions are in place.