September 10, 2006 Five Years Later The fifth anniversary of the 9/11 attack on U. S. soil. Tonight is a double episode. The Dust At Ground Zero: Examining the latest victims of 9/11, the rescue workers and others who were exposed to toxic dust on that fateful day. Katie Couric is conducting her first 60 Minutes story with this one. Also, Tuesday's Children: Scott Pelley follows the families of those killed in the terror attack five years ago, especially the children now living with the loss of a parent.