KORENGAL VALLEY U.S. Army Sgt. Matthew Roberts and fellow soldiers patrol the Korengal valley during the early morning hours in Kunar province, Afghanistan, Aug. 13, 2009. Roberts is assigned to the 4th Infantry Division's Company B, 2nd Battalion, 12th Infantry Regiment, 4th Brigade Combat Team. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 306781-R-RKL13-369.jpg Photo Gallery