U.S. Air Force Lt. Col. Harold Ennulat (Retired), a lead program development manager at the Carnegie Mellon University, Software Engineering Institute, evaluates teams for a training exercise during the Cyber X-Games, hosted by the Army Reserve Cyber Operations Group, 335th Signal Command (Theater), June 15 at Carnegie Mellon University. Cyber X Games is a five-day exercise focusing on advanced areas of cyber security training. Cyber X Games is also part of Cyber Endeavour, the Department of Defense-sponsored conference for military and civilian practitioners from across government, industry and academia to address the nexus of cyberspace and national security. (U.S. Army Reserve photo by Sgt. Erick Yates)