Dr. Joseph Evans Dr. Joseph Evans, technical director for 5G with the Defense Department's Office of the Undersecretary of Defense for Research and Engineering, briefs the media to announce the seven military installations that have been selected to host 5G communications technology testing and experimentation via a telephone conference at the Pentagon, June 3, 2020. SHARE: Download: Full Size (3.83 MB) Credit: Air Force Staff Sgt. Jack Sanders, DOD VIRIN: 200603-D-XI929-2005.JPG Photo Gallery