Remembering 9/11, 25 years later | CBS News Special Report

The United States is observing the 25th anniversary of the September 11, 2001, terrorist attacks. Commemorative ceremonies are taking place across the country, specifically at memorials in New York, the Pentagon in Arlington, Virginia, and Shanksville, Pennsylvania. A CBS News Special Report, anchored by Tony Dokoupil and Norah O'Donnell, is covering these events. Various photo galleries and reports are documenting the anniversary tributes held at these key locations to remember the victims of the attacks.