SUNSET SECURITY U.S. Army Pfc. Kevin March kneels atop a cliff overlooking the Arghandab River valley to provide security for his squad as they climb up the cliff from the valley below in the Arghandab district, Afghanistan, Jan. 31, 2011. March is assigned to the 4th Infantry Division's Company C., 1st Battalion, 66th Armored Regiment, 1st Brigade Combat Team. SHARE IMAGE: Download Image: Full Size (0.03 MB) Photo By: VIRIN: 774907-G-CJC36-395.jpg Photo Gallery