ONDON, ENGLAND - JUNE 1: Prince Harry speaks after presenting U.S. Staff Sergeant Elizabeth Marks' gold medal to members of the medical team from Britain's Papworth Hospital at Kensington Palace on June 1, 2016 in London, England. At the 2016 Invictus Games in Orlando, U.S. Staff Sergeant Elizabeth Marks asked Prince Harry to present her 100m swimming freestyle medal to the team at Papworth Hospital, who she credits for saving her life. (Photo by Matt Dunham - WPA Pool/Getty Images)