U.S. Air Force Gen. Mike Holmes, Commander of Air Combat Command, wears a virtual reality headset to experience a training demonstration put on by the 17th Training Group at the Brandenburg Hall on Goodfellow Air Force Base, Texas, May 30, 2018. This training will allow students to study outside of the class on computers, laptops or tablets. (U.S. Air Force photo by Senior Airman Randall Moose/Released)