U.S. Marines with 1st Battalion, 3rd Marine Regiment, 3rd Marine Division enter and clear a bunker during the Integrated Training Exercise (ITX) at Marine Air Ground Combat Center Twentynine Palms, California, Jan. 25, 2020. ITX is a month-long training event that applies combined-arms maneuver and offensive and defensive operations to prepare Marines for deployment. (U.S. Marine Corps photo by Cpl. Jack C. Howell)
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