Chairman of the Joint Chiefs of Staff U.S. Army Gen.

Chairman of the Joint Chiefs of Staff U.S. Army Gen. Martin E. Dempsey, center left, joins Marine Corps Sgt. Maj. Bryan B. Battaglia, center right, the chairman's senior enlisted adviser, in the rollout of a noncommissioned officer and petty officer book in the auditorium of the Pentagon in Arlington, Va., Dec. 17, 2013. Dempsey was the keynote speaker for the event. The book, titled, "The Noncommissioned Officer and Petty Officer: Backbone of the Armed Forces," is a comprehensive explanation of the enlisted leader across the U.S. armed forces. Medal of Honor recipient Army Sgt. 1st Class Leroy Petry, center, signed the first book, which was sent to the Library of Congress. (DoD photo by Staff Sgt. Sean K. Harp, U.S. Army/Released)