Air Force ROTC cadet Luke Carey, left, assisted by Staff Sgt. Guadalupe Corona, 775th Explosive Ordnance Disposal Flight, prepares to detonate an explosive charge at Hill Air Force Base, Utah, July 31, 2019. Over 80 cadets visited Hill as part of a professional development training program called Operation Air Force. The program gives cadets a greater understanding of the Air Force while introducing them to a variety of careers fields. (U.S. Air Force photo by R. Nial Bradshaw)