647 CES ensures mission readiness through temperature control
U.S. Air Force Senior Airman Matthias Taylor and Airman 1st Class Lorraine Tulee, 647th Civil Engineer Squadron heating, ventilation, air conditioning, and refrigeration technicians, prepares an HVAC unit for a circuit board replacement at Joint Base Pearl Harbor-Hickam, Hawaii, Feb. 25, 2025. The units are essential not only for personnel comfort but also for regulating temperature control for equipment, preventing overheating or damage and ensuring operational efficiency. (U.S. Air Force photo by Staff Sgt. Alan Ricker)