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Prince Harry salutes during a wreath laying ceremony at the Tomb of the Unknowns at Arlington National Cemetery in Arlington, Va Friday, May 10, 2013. (AP Photo/Carolyn Kaster) ( Prince Harry )

Britain's Prince Harry of Wales(C) salutes with Miltary District of Washington Commander, Army Major General Michael S. Linnington at the Tomb of the Unknowns in Arlington National Cemetery on May 10, 2013 in Arlington, Virginia. Prince Harry is on a week long tour of the United States where he is visiting charities. BRENDAN SMIALOWSKI/AFP/Getty Images ( 519613684 )

Members of the US Army watch over people taking pictures as they wait for HRH Prince Harry to arrive during the second day of his visit to the United States at Arlington National Cemetery on May 10, 2013 in Arlington, Virginia. 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 Chris Jackson/Getty Images) ( 168492106 )

People take pictures as they wait for HRH Prince Harry to arrive during the second day of his visit to the United States at Arlington National Cemetery on May 10, 2013 in Arlington, Virginia. 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 Chris Jackson/Getty Images) ( 168492051 )

England's Prince Harry lays a wreath at Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, in Virginia on May 10, 2013. (AP PHOTO/Nicholas Kamm, Pool) ( Prince Harry )

A card from Britain's Prince Harry is pictured as part of a wreath that the prince will place at Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, in Virginia May 10, 2013. The prince is in the U.S. for a six-day visit. REUTERS/Nicholas Kamm/Pool ( BRITAIN-ROYAL/HARRY )

Yound girls take pictures as they wait for HRH Prince Harry to arrive during the second day of his visit to the United States at Arlington National Cemetery on May 10, 2013 in Arlington, Virginia. 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 Chris Jackson/Getty Images) ( 168493593 )

Britain's Prince Harry visits Section 60 at Arlington National Cemetery in Arlington, Virginia May 10, 2013. The prince is in the U.S. on a six-day visit. REUTERS/Charles Dharapak/Pool ( USA-BRITAIN/ )

Prince Harry of Great Britain, wearing his British Army ceremonial uniform of the Blues And Royals in his role as Captain Harry Wales, lays a wreath at Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, on May 10, 2013 in Arlington Virginia. During his visit to the US, Prince Harry will be undertaking engagements on behalf of charities with which he 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 Nicholas Kamm - Pool/Getty Images) ( 168495917 )

Prince Harry of Great Britain, wearing his British Army ceremonial uniform of the Blues And Royals in his role as Captain Harry Wales, visits Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, on May 10, 2013 in Arlington Virginia. During his visit to the US, Prince Harry will be undertaking engagements on behalf of charities with which he 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 Nicholas Kamm - Pool/Getty Images) ( 168495901 )

Prince Harry of Great Britain, wearing his British Army ceremonial uniform of the Blues And Royals in his role as Captain Harry Wales, visits Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, on May 10, 2013 in Arlington Virginia. During his visit to the US, Prince Harry will be undertaking engagements on behalf of charities with which he 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 Charles Dharapak - Pool/Getty Images) ( 168493958 )