181218-F-SQ280-562
U.S. Air Force Senior Airman Chase Doyen, 380th Expeditionary Aircraft Maintenance Squadron KC-10 Extender crew chief, marshalls a KC-10 upon landing at Al Dhafra Air Base, United Arab Emirates, Dec. 18, 2018. The crew chief’s extensive list of responsibilities including for pre-, post- and thru-flight checks, and well as various inspections, allows them to fully understand their vital role, making them jacks-of-all-trades when it comes to repairing the aircraft. (U.S. Air Force photo by Senior Airman Mya M. Crosby)