WASHINGTON, DC - MAY 09:  (L-R) Dr. Jill Biden the wife of Vice President Joe Biden, HRH Prince Harry and first lady Michelle Obama prepare to attend an event to honor military families at the White House during the first day of his visit to the United States on May 9, 2013 in Washington, DC. HRH will be undertaking engagements on behalf of charities with which the Prince is closely associated on behalf also of HM Government, with a central theme of supporting injured service personnel from the UK and US forces.  (Photo by John Stillwell - WPA Pool/Getty Images)