A U.S. Marine with 1st Battalion, 25th Marine Regiment, 4th Marine Division patrols in front of a vehicle convoy during the culminating event of Mountain Training Exercise 4-24 at Marine Corps Mountain Warfare Training Center, Bridgeport, California, June 23, 2024. Marines undergo a 72-hour evaluation testing them in tactics, techniques and procedures for mountain warfare. (U.S. Marine Corps photo by Staff Sgt. Jestin Costa)