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.

Vice President Joe Biden addresses the crowd before the unveiling of the "Wall of Names" at the dedication of the Flight 93 National Memorial on September 10, 2001. The white marble wall has the 40 names of the victims of Flight 93 that perished in a terrorist attacks of 10 ten ago. UPI/Archie Carpenter

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President Bill Clinton addresses the crowd before the unveiling of the "Wall of Names" at the dedication of the Flight 93 National Memorial on September 10, 2001. The white marble wall has the 40 names of the victims of Flight 93 that perished in a terrorist attacks of 10 ten ago. UPI/Archie Carpenter

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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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Media satellites trucks forms a backdrop for flags, messages and flowers left at the Temporary Memorial on September 9, 2011, the eve of the dedication of the permanent National Memorial overlooking the site of the crash where 40 people lost their lives 10 years ago on September 11, 2001. UPI/Archie Carpenter

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