Armed with a Colt 5.56mm M16A2 Assault Rifle, a U.S. Marine Corps troop with Weapons Company, 3rd Battalion, 3rd Marine Regiment, provides security for a Medium Tactical Vehicle Replacement 7-ton truck in the Khowst-Gardez Pass, Afghanistan, on Dec. 30, 2004. These Marines are conducting security and stabilization operations in support of Operation Enduring Freedom. (U.S. Marine Corps Photo by Cpl James L. Yarboro) (Released)