HVAC/R: Keeping AB 201 cool Published Feb. 8, 2021 By Senior Airman Gabrielle Winn 435th Air Expeditionary Wing Public Affairs Nigerien Air Base 201, Agadez, Niger -- U.S. Air Force Tech. Sgt. Eric Smith, 724th Expeditionary Air Base Squadron Civil Engineer Flight heating, ventilation, air conditioning and refrigeration craftsman, inspects a capacitor that will be used in a field deployable environmental control unit at Nigerien Air Base 201, Agadez, Niger, Feb. 2, 2021. FDECU’s are cooling units that are used to keep facilities at Air Base 201 cool to combat the desert heat. (U.S. Air Force photo by Senior Airman Gabrielle Winn)