Under Secretary of Defense for Personnel and Readiness David Chu (right) briefs reporters in the Pentagon on new policies regarding the frequency and length of involuntary mobilizations for National Guard and Reserve units in the Pentagon on Jan. 19, 2007. Chu was joined for the briefing by Deputy Commandant for Programs and Resources Lt. Gen. Emerson N. Gardner Jr. (left), U.S. Marine Corps, and Director of the Army's Force Development Office and Deputy Chief of Staff Lt. Gen. Stephen M. Speakes, U.S. Army.