Competitors leave the starting blocks during a 100-meter sprint heat at the 2014 Invictus Games. The international competition brings together wounded, injured and ill service members in the spirit of friendly athletic competition. American Soldiers, Sailors, Airmen and Marines are representing the United States in the competition which is being held in London, England, Sept. 10-14, 2014. (U.S. Navy photo by Mass Communication Specialist 2nd Class Joshua D. Sheppard/Released)