Flight 93 memorial opens in Pennsylvania (14 images)

President George Bush, Laura Bush, President Bill Clinton, and Vice President Joe Biden attended the unveiling of the "Wall of Names" on September 10, 2001. The white marble wall has the names of the 40 victims of Flight 93 that perished in a terrorist attacks of 10 ten ago.
Updated: Sept. 10, 2011 at 7:17 PM
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Grammy award winning singer-songwriter Sarah McLachlan performs two of his songs at the dedication of the Flight 93 National Memorial on September 10, 2001. UPI/Archie Carpenter
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