Pentagon Prepares For 10th Anniversary Of September 11...

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A woman walks on the ground of the Pentagon Memorial June 28, 2011 in... News PhotoAdult,Arlington - Virginia,Conflict,Horizontal,International Landmark,Memorial,Pentagon Memorial,September 11 2001,Terrorism,USA,Walking,WomenPhotographer Collection: Getty Images News 2011 Getty ImagesARLINGTON, VA - JUNE 28: A woman walks on the ground of the Pentagon Memorial June 28, 2011 in Arlington, Virginia. This year is the 10th anniversary of the September 11 terrorist attacks, in which 184 people were killed at the Pentagon. (Photo by Alex Wong/Getty Images)