First Lady Michelle Obama looks at four-week-old Shawn Wittaker as he is held by his mother Amanda Wittaker during a visit to the Fisher House, located at Walter Reed National Military Medical Center in Bethesda, Md., for a pre-Easter celebration with military families and children, Wednesday, March 20, 2013. (AP Photo/Susan Walsh)

Associated Press
First Lady Michelle Obama looks at four-week-old Shawn Wittaker as he is held by his mother Amanda Wittaker during a visit to the Fisher House, located at Walter Reed National Military Medical Center in Bethesda, Md., for a pre-Easter celebration with military families and children, Wednesday, March 20, 2013. (AP Photo/Susan Walsh)
First Lady Michelle Obama looks at four-week-old Shawn Wittaker as he is held by his mother Amanda Wittaker during a visit to the Fisher House, located at Walter Reed National Military Medical Center in Bethesda, Md., for a pre-Easter celebration with military families and children, Wednesday, March 20, 2013. (AP Photo/Susan Walsh)
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