Airmen from the 90th Cyberspace Operations Squadron assemble toy bricks for their “Bricks in the Loop” display at DEF CON 27 Hacking Conference in Las Vegas, Aug. 8, 2019. “Bricks in the Loop” mimics an Air Force installation to simulate real-world cyber systems in training cyber operators. (U.S. Air Force photo by Tech. Sgt. R.J. Biermann)