Cadets with Air Force ROTC Detachment 290 from the University of Kentucky get a glimpse of the 4-foot transonic wind tunnel control room at Arnold Air Force Base March 19, 2021, as Ken Ligon, a test operations engineer, discusses the testing process. The cadets visited Arnold last month to complete required Professional Development Training. While at Arnold, they toured base facilities and spoke with Arnold personnel to help better prepare them for their own future Air Force careers. (U.S. Air Force photo by Bradley Hicks) (This image was altered by obscuring badges for security purposes.)