Left to right, former President George W. Bush, former first lady Laura Bush, former President Bill Clinton, Dr. Jill Biden and Vice President Joe Biden review the Wall of Names during the dedication of Phase 1 of the permanent Flight 93 National Memorial near the crash site of Flight 93 in Shanksville, Pa., on Sept. 10, 2011. The Wall of Names features the names of those passengers and crew aboard Flight 93 who died when the plane crashed on 9/11.
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