Deputy Secretary of Defense Pat Shanahan, right, visits the stables of the Caisson Platoon, 1st Battalion, 3rd Infantry Regiment (Old Guard) during a visit to Joint Base Myer-Henderson Hall, Va., Aug. 14, 2017. The platoon cares for and rides the horses used in funerals at Arlington National Cemetery. (DOD photo by Air Force Tech. Sgt. Brigitte N. Brantley)

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Keywords: 33rd, brantley, brigitte, current, defense, department, depsecdef, deputy, dod, dsd, pat, patrick, pentagon, secdef, secretary, shanahan