HVAC specialists heat Eielson
U.S. Air Force Airmen 1st Class Nicholas Tennies and Corey Musial, 354th Civil Engineer Squadron heating, ventilation and air conditioning specialists, repair a pipe leak Feb. 19, 2014, Eielson Air Force Base, Alaska. HVAC specialists are responsible for installing, maintaining and repairing systems in climates ranging from desert heat to arctic cold. (U.S. Air Force photo by Staff Sgt. Jim Araos)