Corporal Ronaldo Noriega, a correspondence clerk with the 8th Marine Corps District, runs his second mile out of 12 miles in the Tough Mudder event in Paige, Texas, October 7, 2012. The Tough Mudder event, which takes place in different cities across the United States, obstacles designed to test strength, stamina, and mental toughness. All proceeds of Tough Mudder event goes to support wounded service members through the Wounded Warrior Project.