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 Ellen M. Lord Under Secretary of Defense (Acquisition, Technology and Logistics) 3010 Defense Pentagon Washington, DC 20301-3010 Robert Wilkie Under Secretary of Defense (Personnel and Readiness) 4000 Defense Pentagon Washington, DC 20301-4000 John C. Rood Under Secretary of Defense (Policy) 2000 Defense Pentagon Washington, DC 20301-2000 David L. Norquist Under Secretary of Defense (Comptroller) 1100 Defense Pentagon Washington, DC 20301-1100
The Chairman and Vice Chairman of the Joint Chiefs of Staff General Joseph F. Dunford 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