9/11 Remembered

The world changed forever on September 11, 2001. The worst terrorist attack in U.S. history brought down New York's twin towers. On the anniversary of September 11th, the city will hold a memorial service to commemorate the thousands that died. Family members will read the names of the dead and four moments of silence will be observed - twice to mark the times that each plane hit the towers, and twice to mark the time when each tower fell.