From left, Commandant of the Marine Corps Gen. Robert B. Neller, Air Force Gen. Joseph L. Lengyel, chief of the National Guard Bureau, and Lt. Gen. Raimonds Graube, Latvia chief of defense, watch an a combined arms demonstration during Northern Strike in Grayling, Mich., Aug., 16, 2016. Neller visited Northern Strike to observe Marine training missions. ( Marine Corps photo by Cpl. Samantha K. Draughon/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: air, army, cmc, commandant, corps, force, guard, marine, marines, michigan, national, northern, strike, usmc, usmccomcam