U.S. Marines with November Battery, 5th Battalion, 14th Marine Regiment, 4th Marine Division, dig holes for the spades of an M777 howitzer before a fire mission at Gays Pass during Integrated Training Exercise 4-19 at the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., June 14, 2019. Marine Forces Reserve units participate in ITX to both complete annual training requirements and to increase unit readiness and proficiency. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris)