U. S. Marine Corps Lance Cpl. Samantha Gaona, cancer survivor from San Antonio, watches as another Wounded Warrior takes a shot during wheelchair basketball practice for the 2012 Marine Corps Trials at Marine Corps Base Camp Pendleton, CA Feb 16, 2012. More than 300 injured Marines, veterans and allies are competing in the second annual trials, which include swimming, wheelchair basketball, sitting volleyball, track and field, archery, cycling and shooting.