Marine Corps Lt. Gen. James B. Laster, director, Marine Corps Staff, left, stands at the position of attention with Sgt. Maj. Robert B. Pullen, battalion sergeant major of Headquarters and Services (H&S) Battalion, Joint Base Myer-Henderson Hall, middle, and Col. Andrew M. Regan, commanding officer, H&S Battalion, during his award ceremony at Henderson Hall, Arlington, Va., April 22, 2016. Regan was awarded the Defense Superior Service Medal for his actions during Operation Enduring Freedom and Operation Freedom’s Sentinel. ( Marine Corps photo by Lance Cpl. Hailey D. Stuart/Released)

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