Col. Dwayne Whiteside (right), commanding officer of Combat Logistics Regiment 2, Regional Command (Southwest), shakes the hand of Cpl. Samuel Hahn, a Boston native and water support technician with Combat Logistics Regiment 2, RC(SW), during a battlefield circulation at Camp Dwyer, Afghanistan, Aug. 11, 2013. Hahn gave command staff members a guided tour of the base’s water facilities.