Tech. Sgt. Joshua Frye, 385th Expeditionary Aircraft Maintenance Squadron crewchief, conducts a preflight check on a U. S. Air Force KC-135 Stratotanker for the 28th Expeditionary Air Refueling Squadron crew to complete a mission at Al Udeid Air Base, Qatar, on Aug. 28, 2019. Maintainers prepare the aircraft before takeoff, oversee launch and then conduct recovery when the aircraft lands. The KC-135 Stratotanker provides the core aerial refueling capability for the United States Air Force and has excelled in this role for more than 60 years. (U.S. Air Force photo by Staff Sgt. Ashley L. Gardner)