ROUTE CLEARANCE U.S. Army 2nd Lt. William Atwell and Sgt. Steve Torres from Headquarters and Headquarters Company, Charlie Company, 1st Battalion, 2nd Infantry Regiment, 172nd Infantry Brigade, investigate a hole during a route clearance mission outside Forward Operating Base Kalsu, Iraq, Jan. 3, 2009. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 593179-T-PQR13-306.jpg Photo Gallery