Marines with Delta Battery, 2nd Battalion, 14th Marine Regiment, 4th Marine Division, participate in HIMARS Rapid Infiltration (HIRAIN) training Sept. 4, 2020. HIRAIN operations reinforce the Commandant of the Marine Corps’ intent to expand rocket artillery batteries across the force to build a more rapid and lethal Marine Corps. Marines of 2nd Battalion, 14th Marine Regiment remain committed to ensuring unit readiness for whenever the call comes to go, fight and win our nation’s battles. (U.S. Marine Corps photo by Sgt. Ronald L. Parker II)