President Biden, Vice President Harris and former President Trump are in New York City to honor the nearly 3,000 people who died on Sept. 11, 2001. Memorials will continue in Shanksville, Pennsylvania, and the Pentagon to remember those who perished in the attacks.
The award-winning director behind "The Princess Bride," "When Harry Met Sally," "A Few Good Men" and more, helped shape cinema with stories full of heart and humor. David Muir looks back at his life....