U.S. Air Force Staff Sgt. Michael L. Indo, 68th Airlift Squadron flight engineer, shows Ashley M. Jones and Kevin C. Castillo the inboard logistical rail and roller conveyer while inside a C-5M Super Galaxy aircraft during the Youth Aerospace Expo at Kelly Field, Texas, Nov. 16, 2019. (U.S. Air Force photo by Staff Sgt. Lauren M. Snyder)