March 11 - March 17, 2012 (57 images)

Updated: May 1, 2012 at 11:38 AM
39 of 57
First Lady Michelle Obama and Samantha Cameron, the wife of United Kingdom's Prime Minister David Cameron, walk with Dan O'Brian, American decathlete and Olympic gold-medal winner, as they participate in a mini-Olympics with local area school children at American University in Washington, D.C. on March 13, 2012. UPI/Kevin Dietsch
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