Army Secretary John M. McHugh, far left, swears in Army Chief of Staff Gen. Mark A. Milley as the 39th chief of staff of the Army during a ceremony on Summerall Field, Joint Base Myer-Henderson Hall, Va., Aug. 14, 2015. Milley's wife, Hollyanne, holds a Bible.

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Keywords: change, csa, fort, mchugh, meyer, milley, responcability