Chief Master Sgt. Adam Vizi, the 28th Bomb Wing command chief, speaks to a group of noncommissioned officers participating in Backbone University Sept. 6, 2017, on Ellsworth Air Force Base, S.D. Vizi brought the course to Ellsworth from his previous duty station in South Korea, valuable to NCOs on the base. (U.S. Air Force photo by Airman 1st Class Thomas Karol)