Former first lady Laura Bush, from left, former President George W. Bush, former President Bill Clinton, Dr. Jill Biden and Vice President Joe Biden view the Wall of Names, which displays the names of... more 
Former first lady Laura Bush, from left, former President George W. Bush, former President Bill Clinton, Dr. Jill Biden and Vice President Joe Biden view the Wall of Names, which displays the names of passengers and crew who died on United Flight 93 on Sept. 11, 2001, at the dedication of phase 1 of the permanent Flight 93 National Memorial near the crash site of Flight 93 in Shanksville, Pa. Saturday Sept. 10, 2011. (AP Photo/Amy Sancetta) less 
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Associated Press | Photo By Amy Sancetta
Sat, Sep 10, 2011 3:15 PM EDT