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Shanksville, Pa.

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• Sept. 11, 2001: Emergency personnel investigate the scene of the crash of United Airlines Flight 93 in Shanksville, Pa.
• Sept. 11, 2001: Emergency personnel mark off the crash site of United Airlines Flight 93 in Shanksville, Pa.
• Sept. 16, 2001: U.S. flag flies over crash site of United Airlines Flight 93 in Shanksville, Pa.
• Sept. 12, 2001: An aerial view of the crash site of hijacked United Airlines Flight 93 in Shanksville, Pa.
• March 11, 2002: The dedication ceremony of a memorial plaque with the names of victims of United Airlines Flight 93.
• Sept. 7, 2002: People gather at temporary memorial site to United Flight 93, Shanksville, Pa.
• Sept. 10, 2002: "Angels of Freedom" memorial next to the crash site of Flight 93, near Shanksville, Pa.
• Sept. 10, 2004: A man leaves flowers at the memorial near the crash site of United Airlines Flight 93.
• Sept. 9, 2002: A temporary memorial at the crash site of United Flight 93, Shanksville, Pa.
• May 27, 2002: A memorial near the crash site of United Airlines Flight 93, Shanksville, Pa.
• Sept. 5, 2006: Members of the American Firefighters Motorcycle Club gather to dedicate United Flight 93 commemorative stone.
• Sept. 5, 2006: Lt. Tom Maloney speaks at the beginning of an escort of a commemorative stone for the victims of Flight 93.