No heat, no cool
U.S. Air Force Airman 1st Class Jedadiah Floyd, 31st Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration technician, shuts off a boiler in the dormitories, March 24, 2015, at Aviano Air Base, Italy. When the heating system is turned off during the “no heat, no cool” season, this energy conservation program saves the base more than $320,000 a month. (U.S. Air Force photo by Airman 1st Class Deana Heitzman/Released)