Col. Naomi Boss, 28th Medical Group commander, greets Chief Master Sgt. Lloyd Hollen, 12th Air Force command chief, outside of the medical group building June 3. Chief Hollen got acquainted with Ellsworth’s Airmen as their new 12th Air Force command chief while touring bases within the 12th Air Force. (U.S. Air Force photo/Airman 1st Class Kasey Zickmund)