U.S. Marine Corps Lance Cpl. Yifei Zhao, a firefighter, with Aircraft Rescue and Fire Fighting, Marine Wing Support Squadron 472, 4th Marine Aircraft Wing, breathes into a gas mask during a simulated aircraft fire-fighting drill at Integrated Training Exercise 3-25, Marine Corps Air Ground Combat Center, Twentynine Palms, California, June 17, 2025. ITX is a critical Marine Air-Ground Task Force exercise for the Marine Forces Reserve’s training cycle, confirming unit readiness through live-fire and combined-arm integration. (U.S. Marine Corps photo by Lance Cpl. Edward Spears)