U.S. Marines begin to clear a building as a part of a squad urban fundamentals course during an adversary force exercise at Marine Corps Air-Ground Combat Center, Twentynine Palms, California, Dec. 5, 2024. Marines with Echo Company, 2nd Battalion, 23rd Marine Regiment, 4th Marine Division, conducted this range to increase proficiency in multiple forms of urban building breaches during an AFX in preparation for their upcoming deployment. This will be the first time since 2020 that a Reserve unit has been activated for a deployment. (U.S. Marine Corps photo by Lance Cpl. Orion Stpierre)