Cpl. Ryan Mayer, an assistant maintenance chief with 4th Assault Amphibian Battalion, 4th Marine Division, observes his surroundings at range 114 during Integrated Training Exercise (ITX) 4-21 at Camp Wilson, Marine Corps Air Ground Combat Center Twentynine Palms, California on July 20, 2021. ITX is the culmination of Marine Forces Reserve units’ training cycle as they participate in a live-fire, combined arms exercise as a part of an integrated Marine Air Ground Task Force. (U.S. Marine Corps photo by Lance Cpl. David Intriago)