Staff Sgt. Christopher Lang asks an Afghan man a series of questions.
U.S. Army Staff Sgt. Christopher Lang (left), a platoon sergeant with 2nd Platoon, Angel Company, 3rd Battalion, 187th Infantry Regiment, asks an Afghan man (right) a series of questions during Operation Angel Strike 12 in Sangar, Afghanistan, on Dec. 15, 2010. The purpose of the operation was to search for insurgents and improvised explosive device materials.