U.S. Marine Corps Pfc. Colin Nelson, assigned to Kilo/Company, Headquarters and Service Company, 3rd Battalion, 3rd Marine Regiment, provides security while Marines look through a local outdoor school, during a security patrol in the Khowst province of Afghanistan, Feb. 13, 2005. Marines are conducting security and stabilization operations in support of Operation Enduring Freedom. (U.S. Marine Corps photo by Cpl. James Yarboro/Released)