U.S. Army National Guard Warrant Officer Candidate Tyler Hightree, Nebraska Cyber Network Defense Team (CND-T) member, works with his teammates of Blue Team 18 during Cyber Shield 16 at Camp Atterbury, Ind., April 22, 2016. The Blue Team will combat the opposing forces of Red Team during cyber attack scenarios, which will be presented here next week. Cyber Shield is a two-week Army National Guard training exercise designed to develop and train cyber-capable forces. (U.S. Army photo by Sgt. Stephanie A. Hargett)