U.S. Air Force Senior Airman Daniel Andrade, 4th Civil Engineer Squadron HVAC technician, summarizes HVAC technician responsibilities and duties at Seymour Johnson Air Force Base, North Carolina, on Dec. 5, 2023. The 4th CES mission is to provide facilities, infrastructure, and emergency services to on base structures. (U.S. Air Force video by Senior Airman Sabrina Fuller-Judd) More