Staff Sgt. Mitchell Cole, 4th Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration technician, turns on the disconnect after fixing a split system air conditioner at Seymour Johnson Air Force Base, North Carolina, June 14, 2021. Power is turned off for safety and locked out prior to working on an air conditioning unit, preventing the technician from getting electrocuted. (U.S. Air Force photo by Airman 1st Class Kimberly Barrera)