Office of the Secretary of Defense James N. Mattis Secretary of Defense 1000 Defense Pentagon Washington, DC 20301-1000 Patrick M. Shanahan Deputy Secretary of Defense 1010 Defense Pentagon Washington, DC 20301-1010 Michael D. Griffin Under Secretary of Defense (Research and Engineering) 3030 Defense Pentagon Washington, DC 20301-3030 Ellen M. Lord Under Secretary of Defense (Acquisition, Technology and Logistics) 3010 Defense Pentagon Washington, DC 20301-3010 David L. Norquist Under Secretary of Defense (Comptroller) 1100 Defense Pentagon Washington, DC 20301-1100 John C. Rood Under Secretary of Defense (Policy) 2000 Defense Pentagon Washington, DC 20301-2000 Robert Wilkie Under Secretary of Defense (Personnel and Readiness) 4000 Defense Pentagon Washington, DC 20301-4000
The Chairman and Vice Chairman of the Joint Chiefs of Staff General Joseph F. Dunford Jr. Chairman of the Joint Chiefs of Staff 9999 Joint Staff Pentagon Washington, DC 20318-9999 General Paul J. Selva Vice Chairman of the Joint Chiefs of Staff 9999 Joint Staff Pentagon Washington, DC 20318-9999
Secretaries of the Armed Forces Dr. Mark T. Esper Secretary of the Army 101 Army Pentagon Washington, DC 20310-0101 Richard V. Spencer Secretary of the Navy 1000 Navy Pentagon Washington, DC 20350-1000 Dr. Heather Wilson Secretary of the Air Force 1670 Air Force Pentagon Washington, DC 20330-1670
The Chiefs of Staff General Mark A. Milley Army Chief of Staff 200 Army Pentagon Washington, DC 20310-0200 Admiral John M. Richardson Chief of Naval Operations 2000 Navy Pentagon Washington, DC 20350-2000 General Joseph L. Lengyel Chief, National Guard Bureau 1636 Defense Pentagon Ste 1E169 Washington, DC 20301-0001 General David L. Goldfein Air Force Chief of Staff 1670 Air Force Pentagon Washington, DC 20330-1670 General Robert B. Neller Commandant of the Marine Corps Headquarters, US Marine Corps 3000 Marine Corps, Pentagon Washington, DC 20350-3000