U.S. Army soldiers fortify their fighting positions where they provide security for fellow soldiers through the night on two-hour shifts in Afghanistan's Parwan province, Jan. 01, 2011.

The soldiers, assigned to Bravo Troop, 1st Squadron, 113 Cavalry Regiment, visited Vehicle Patrol Base Dandarh to build up the base defense and to conduct dismounted patrols through surrounding villages to ensure security.

U.S. Army photo by Spc. Kristina Gupton