U.S. wounded warrior athletes participate in the athletic portion of the Invctus Games at the Lee Valley Athletics Centre, London, Sept. 11, 2014. Athletics is one of several sports over 300 wounded warriors from 13 nations will compete in including archery, wheelchair basketball, road cycling, indoor rowing, wheelchair rugby, swimming and sitting volleyball. The vision for the Invictus Games is to harness the power of sport to inspire recovery, support rehabilitation and generate a wider understanding and respect for those who serve their country. (U.S. Air Force photo by Senior Airman Tiffany DeNault/released)