A Marine with Battery B, 2nd Battalion, 11th Marine Regiment, 1st Marine Division adjusts an M777 Howitzer during Summer Fire Exercise 15, aboard Marine Corps Base Camp Pendleton, Calif., Aug. 13, 2015. The exercise, which spans Aug. 6-17, provides an opportunity for Marines to practice standing operating procedures for coordinating and executing fire missions in preparation for future operations. (U.S. Marine Corps photo by Cpl. Demetrius Morgan/RELEASED)
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