![](http://www.alamy.com/thumbs/6/3CF0F319-6416-457D-B45B-1FF931C7BC8A/2M5NDP8.jpg)
Marine Corps Pfc. Wenjun Liu, an artillery systems technician with 1st Maintenance Battalion, 1st Marine Logistics Group, I Marine Expeditionary Force, operates an M2A1 heavy machinegun during a live-fire exercise at Camp Pendleton, California, March 29, 2022. The live-fire exercise was conducted to maintain combat effectiveness and allow Marines to train with the M2A1 machine gun.
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Keywords: 1st, battalion, maintenance, marines, usmc