Invictus Games - Opening Ceremony

LONDON, UNITED KINGDOM - SEPTEMBER 10: Prince William, Duke of Cambridge (L) and Camilla, Duchess of Cornwall, laugh during the opening ceremony of the Invictus Games at the Queen Elizabeth Park on September 10, 2014 in east London, England. The Invictus Games which will run from September 10-14, is an international sporting event for wounded servicemen and women from 13 countries. (Photo by Luke MacGregor/WPA Pool/Getty Images)