NELLIS AIR FORCE, Nev. --   Retired U.S. Air Force Col. Michael McKinney presents Col. Michael Rider, former Nevada Test and Training Range commander, with a certificate of appreciation during a retirement ceremony at Nellis Air Force Base, Nevada, May 16, 2024. Rider was responsible for the planning and oversight of the United States’ largest and most sophisticated instrumented live and virtual battlespaces for testing and training for U.S. military and coalition air forces. (U.S. Air Force photo by Senior Airman Jordan McCoy)