The 91st Cyberspace Operations Squadron “Demon Chasers” team builds a sandbag wall during the 67th Cyberspace Wing annual safety day “Gunslinger” warrior challenge at Joint Base San Antonio-Lackland, Texas, April 6, 2018. The challenge pitted several teams against one another in seven timed events, where the 68th Network Warfare Squadron “Purple Dragons” captured first place. (U.S. Air Force photo by Tech. Sgt. R.J. Biermann)