Infantry assault Marines and machine gunners with Bravo Company, 1st Battalion, 23rd Marine Regiment, 4th Marine Division, prepare to attack Machine Gun Hill on range 410A, a platoon reinforced attack range, during Integrated Training Exercise 4-18 at Marine Corps Air Ground Combat Center Twentynine Palms, California, June 12, 2018. ITX 4-18 provides MAGTF elements an opportunity to undergo a service-level assessment of core competencies that are essential to expeditionary, forward-deployed operations. (U.S. Marine Corps photo by Lance Cpl. Samantha Schwoch/released)