181204-F-HB600-006
Staff Sgt. Ryan Petroski, a 28th Aircraft Maintenance Squadron hydraulic systems craftsman, right, and Senior Airman Dalton Christopherson, a 28th AMXS hydraulic systems apprentice, left, inspect the right-side actuator on a B-1B Lancer at Ellsworth Air Force Base, S.D., Dec. 4, 2018. Hydraulic systems Airmen are responsible for any air, gas or fluid-pressurized components on the aircraft. (U.S. Air Force photo by Senior Airman Denise Jenson)