MINOT AIR FORCE BASE, N.D. -- 5th Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration specialist perform maintenance around Minot Air Force Base, North Dakota, Feb. 19, 2025. These specialists are responsible for the installation, maintenance and operation of HVAC/R systems and equipment necessary for Airmen to complete operations in a variety of climates all over the world. (U.S. Air Force photo by Senior Airman Kendra A. Ransum)