U.S. Marine Cpl. Russell Allen, a cannoneer with November Battery, 5th Battalion, 14th Marine Regiment, 4th Marine Division, closes the breach 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. Today’s Marine Reserve is a critical component of the Marine Corps’ Total Force, and training like ITX helps ensure Reserve units combat effectiveness and proficiency for world-wide deployment. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris)