Senior Airman Jaramie York, 459th Aircraft Maintenance Squadron maintainer, awaits approval to marshal a KC-135R Stratotanker down the runway at Joint Base Andrews, Md., Dec. 13, 2016. The aircraft burns approximately 10,000 pounds of fuel during a typical four-hour mission when its four engines are running. (U.S. Air Force photo by Staff Sgt. Joe Yanik)