Soldiers with 4th Battalion, 42nd Field Artillery Regiment, 1st Brigade Combat Team, 4th Infantry Division, scrape carbon from the barrel of a M109A6 Paladin howitzer in preparation for a Decisive Action training rotation at the National Training Center. The M109A6 is a technologically-advanced self-propelled cannon system. The fire-control system is fully automated, providing accurate position location, azimuth reference and on-board ballistic solutions of fire missions. It has an unassisted range of 22,000 meters and fires 155 mm rounds.
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