Cyber Exercise Air Force Sr. Airman Nicholas Hames, a 673d Communications Squadron cyber control operator, sets up secure voice communications in a simulated remote location as part of exercise Polar Force 21-1 at Joint Base Elmendorf-Richardson, Alaska, Oct. 13, 2020. SHARE: Download: Full Size (1.45 MB) Credit: Air Force Airman 1st Class Samuel Colvin VIRIN: 201013-F-YL679-1026A.JPG Photo Gallery