Pentagon

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Human resource managers with the U.S. Army office of the Surgeon General pay their respects to a former co-worker, Lt. Col. Karen J. Wagner, who was killed in the September 11, 2001 terrorist attack on the Pentagon at the Pentagon Memorial, Arlington, Va., Wednesday, September 11, 2013. (Andrew Harnik/The Washington Times)

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President Obama leaves after laying a wreath at the Pentagon on Wednesday, Sept. 11, 2013, during a ceremony marking the 12th anniversary of the 9/11 attacks. (AP Photo/Manuel Balce Ceneta)

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** FILE ** In this July 31, 2013, file photo, Defense Secretary Chuck Hagel pauses during a news conference at the Pentagon in Washington. Hagel is suggesting Friday, Aug. 23, 2013, that the Pentagon is moving naval forces closer to Syria in case President Barack Obama decides to order military strikes. (AP Photo/Evan Vucci, File)