JOINT BASE ELMENDORF-RICHARDSON, Alaska -- Alaska Air National Guard Staff Sgt. Michael Cook, 176th Operations Support Squadron, operates his console July 22, 2021, during Cyber Shield 21 at Joint Base Elmendorf-Richardson, Alaska. Cyber Shield 21 is a concentrated effort to develop, train and exercise cyber forces in the areas of computer network internal defensive measures and cyber incident response. (U.S. Air National Guard photo by David Bedard/Released)