Airman 1st Class Lorraine Tulee, 647th Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration technician, prepares an HVAC unit for a circuit board replacement at Joint Base Pearl Harbor-Hickam, Hawaii, Feb. 25, 2025. The team is responsible for servicing Air Force units throughout the installation, ensuring mission readiness by maintaining optimal temperatures for personnel and equipment. (U.S. Air Force photo by Staff Sgt. Alan Ricker)