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 up-keep to on base facilities and heating and cooling systems. (U.S. Air Force video by Senior Airman Sabrina Fuller-Judd) More