Tech. Sgt. Adrian “Action” Jackson, C-5M Formal Training Unit flight engineer instructor, conducts a scanners preflight walk-around prior to a Formal Training Unit training flight June 8, 2017, at Dover Air Force Base, Del. The FTU has trained 471 C-5M pilots and flight engineers since opening in 2012. (U.S. Air Force photo by Senior Airman Zachary Cacicia)