1st Lt. Pat Barone, foreground, a platoon leader, and Sgt. Daryl Appling, both with Company D, 1st Battalion, 504th Parachute Infantry Regiment, 1st Brigade, 82nd Airborne Division (Advise and Assist), explain to Iraqi Department of Border Enforcement soldiers how to conduct tactical patrols at night along the Iraqi-Syrian border, on Dec. 9, 2009. Photo via the US Army.