Capt. Justin Ball, 390th Cyberspace Operations Squadron Weapons and Tactics chief, explains the purpose of the 90th Cyber Operations Squadron “Bricks-in-the-Loop” model to Gen. Mike Holmes, commander Air Combat Command, and civic leaders during a tour at Joint Base San Antonio-Lackland, Texas, May 31, 2018. The model is used as a cyber training tool to teach cyber Airmen information technology and operational technology network defense. The tour was hosted to introduce attendees to 24th Air Force's cyberspace mission and 25th AF's intelligence, surveillance and reconnaissance mission. (U.S. Air Force photo by Tech. Sgt. R.J. Biermann)