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Lance Cpl. Jacob Colvin, a combat correspondent with the American Forces Network, Yokota Air Base, Japan, currently supporting the 31st Marine Expeditionary Unit, fires an M4 carbine as part of small-arms and machine gun marksmanship training during Exercise Talisman Saber 17 on Townshend Island, Shoalwater Bay Training Area, Queensland, Australia, July 16, 2017. Colvin, 22, is a native of Shepherdstown, West Virginia. Marines with Combat Logistics Battalion 31 provide essential support to the Marines and Sailors of the 31st Marine Expeditionary Unit while supporting Talisman Saber 17. The 31st MEU is taking part in Talisman Saber 17 while deployed on a regularly-scheduled patrol of the Indo-Asia-Pacific region. Talisman Saber is a biennial exercise designed to improve the interoperability between Australian and U.S. forces. (U.S. Marine Corps photo by Lance Cpl. Stormy Mendez/Released)