Pentagon remembers Sept. 11

Bush marked the seventh anniversary of the deadliest attack on U.S. soil with a moment of silence at the White House at 8:46 a.m. EDT, precisely the moment when terrorists crashed a hijacked airliner into the World Trade Center in New York. A second plane struck the trade center shortly thereafter. Another was flown into the Pentagon and still another crashed in a field at Shanksville, Pa. Pablo Martinez Monsivais / AP