Staff Sgt. Ernesto Riojas (left), 100th AMXS aerospace propulsion craftsman, and Airman 1st Class Rajendra Harilall (right), 100th Aircraft Maintenace Squadron aerospace propulsion journeyman, discuss a maintenance issue at RAF Mildenhall England, June 9, 2020. Engine expertise is developed through years of hands-on experience troubleshooting engine issues. (U.S. Air Force photo by Airman 1st Class Joseph Barron)