A wounded warrior with a below-knee amputation swims laps during practice for the 2012 Marine Corps Trials at Marine Corps Base Camp Pendleton, Calif., Feb. 15. The swimmers were among more than 300 injured Marines, veterans and allies competing in the second annual trials, which include swimming, wheelchair basketball, sitting volleyball, track and field, archery, cycling and shooting. The top 50 performing Marines will earn the opportunity to compete in the Wounded Warrior Games in Colorado Springs in May.