U.S. Air Force Tech. Sgt. Roderick Hill, heating, ventilation and air conditioning craftsman with the 380th Expeditionary Civil Engineer Squadron, checks an air conditioning unit during operations at a non-disclosed base in Southwest Asia on Jan. 17, 2010. A 12-year veteran of the Air Force, Sergeant Hill is responsible for maintaining HVAC equipment throughout the 380th Air Expeditionary Wing. Sergeant Hill is deployed from the 786th Civil Engineer Squadron at Ramstein Air Base, Germany, and his hometown is Moreauville, La. (U.S. Air Force photo by Tech. Sgt. Scott T. Sturkol)