U.S. Air Force Staff Sgt. Guillermo Soto Arce, F-22 Raptor Electrical System Maintenance instructor, teaches students in an advanced training course at Joint Base Langley-Eustis, Va., Nov. 17, 2016. During their time in the course, students will get classroom time with their instructors, going in-depth into the information they will need to repair, examine or report on their aircraft. After the classroom time, they will get hands-on experience with training equipment as well as some active aircraft. (U.S. Air Force photo by Senior Airman Kimberly Nagle)