A U.S. Air Force Academy class of 2023 basic cadet tests the Assault Course at Jacks Valley on the grounds of the academy, July 22, 2019. The assault course is a physically and mentally strenuous course in which basic cadets are put through combat-like situations with simulated small arms fire, artillery explosions and obstacles during the final phase of their training. (U.S. Air Force photo by Trevor Cokley) af_academy #YearInPhotos #AirForce #USAF #Airman #Airmen #training #AssaultCourse #cadets (Day 54/100)