Secretary Gates addresses the audience during an arrival and swearing-in ceremony for Gen. Martin E. Dempsey.
Secretary of Defense Robert M. Gates addresses the audience during an arrival and swearing-in ceremony for Gen. Martin E. Dempsey at Fort Myer, Va., on April 11, 2011. Dempsey was sworn in as the 37th Chief of Staff of the Army after Gen. George W. Casey Jr. retired earlier in the day.