11 of 14: President Barack Obama dances with Air Force Staff Sgt. Bria Nelson as first lady Michelle Obama dances with Marine Corps Gunnery Sgt. Timother Easterling at the Commander-in-Chief's Inaugural Ball in Washington, at the Washington Convention Center during the 57th Presidential Inauguration Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais, Pool) (AP Photo/ Pablo Martinez Monsivais)

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