Peter Pace (born November 5, 1945) is a former United States Marine Corps general who served as the 16th Chairman of the Joint Chiefs of Staff. Pace was the first Marine officer appointed as chairman, and the first Marine officer to be appointed to three different four-star assignments; the others as the 6th Vice Chairman of the Joint Chiefs of Staff from October 1, 2001, to August 12, 2005, and as Commander-in-Chief, U.S. Southern Command from September 8, 2000, to September 30, 2001.