Tech. Sgt. Bradley Duncan, 436th Maintenance Squadron metals technology section chief explains to Joey Logano, driver of the No. 22 Ford in the Monster Energy NASCAR Cup Series, how the metals technology section fabricates aircraft parts April 11, 2018, at Dover Air Force Base, Del. Duncan told Logano that a plastic version of an aircraft part is made first by using Computer Numerical Controlled (CNC) machining capabilities prior to fabricating a final version from stock metal. (U.S. Air Force photo by Roland Balik)