LONDON, UNITED KINGDOM - SEPTEMBER 10: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge, Camilla, Duchess of Cornwall, Prince Charles, Prince of Wales and Prince Harry attend the Opening Ceremony of the Invictus Games at the Queen Elizabeth Olympic Park on September 10, 2014 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
