Expeditionary HVAC technicians battle the heat; distribute the cool
Tech. Sgt. Steven Hernandez, Tech. Sgt. John Knapp and Staff Sgt. Tyler Olson, 386th Expeditionary Civil Engineer Squadron heating, ventilation and air conditioning technicians, service an air conditioning unit at an undisclosed location in Southwest Asia, Feb. 6, 2019. Maintenance included charging the unit with refrigerant, changing out filters, checking fan belts and cleaning the condenser oil, along with other tasks. (U.S. Air Force photo by Staff Sgt. Arielle Vasquez)