Donald Simones, a subject matter expert in the Air Force Research Laboratory’s 711th Human Performance Wing, flies a virtual F-16 in a Deployable Tactical Trainer during the Secure Live Virtual Constructive Advanced Training Environment (SLATE) Phase III capstone demonstration at Nellis Air Force Base, Nevada in September. The live aircraft, such as the one shown on the screen, were able to see and interact with the virtual players like Simones during the demonstration. (U.S. Air Force photo/William Graver)