U.S. Air Force Staff Sgt. Andrew LaBrake, 633rd Civil Engineer Squadron heating, ventilation and air conditioning craftsman, disconnects a drain lineage before repairing a fan coil at Langley Air Force Base, Va., Aug. 6, 2013. LaBrake is responsible for repairing the HVAC systems that service roughly 1,100 dorm residents. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)