Lt. Col. Paul Brenner, senior reserve advisor to the commandant of the Air Force’s Cyber College, teaches in a classroom, Aug. 17, 2018, on Maxwell Air Force Base, Alabama. When not teaching at the Cyber College, Brenner is director of the University of Notre Dame’s Center for Research Computing, regularly working with cutting-edge technology in the civilian sector. (U.S. Air Force photo by Airman 1st Class Charles Welty)