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Secretary of Defense James N. Mattis cheers on the U.S. Army football team during a pep rally at the Pentagon on Dec. 8, 2017, in Washington. (Air Force Staff Sgt. Jette Carr/DoD)
Secretary of Defense James N. Mattis cheers on the U.S. Army football team during a pep rally at the Pentagon on Dec. 8, 2017, in Washington. (Air Force Staff Sgt. Jette Carr/DoD)