U.S. Air Force Senior Airman Zachery Murray, 92nd Aircraft Maintenance Squadron flying crew chief, performs pre-flight checks on a KC-135 Stratrotanker at Dyess Air Force Base, Texas, Aug. 14, 2019. Flying crew chiefs are faced with the challenge of providing maintenance to aircraft off-station during both temporary duty and deployment missions. (U.S. Air Force photo by Airman 1st Class Lawrence Sena)