U.S. Marines with 3rd Battalion, 23rd Marine Regiment, 4th Marine Division, Marine Forces Reserve, execute Range 400 during Integrated Training Exercise (ITX) 4-22 at Marine Corps Air-Ground Combat Center, Twentynine Palms, Calif., July 23, 2022. Range 400 is used to conduct company-level live-fire training in a deliberate assault against prepared defensive positions. MAGTF-23 aggregated at Marine Corps Air-Ground Combat Center from 55 Home Training Centers, further preparing Marine Forces Reserve for potential future mobilizations and deployments. (U.S. Marine Corps photo by Lance Cpl. David Intriago)