U.S. Air Force Academy Cadet 2nd Class Harrison Cate looks for opposing forces after a simulated ambush during an Expeditionary Readiness Training course at Goodfellow Air Force Base, Texas, July 3, 2024. Students attending ERT receive instruction on numerous topics, including the laws of war and the proper use of force. (U.S. Air Force photo by Senior Airman Zach Heimbuch)