Assistant to the Secretary of Defense for Intelligence Oversight

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The Assistant to the Secretary of Defense for Intelligence Oversight, or ATSD(IO), is responsible to the U.S. Secretary of Defense for the independent oversight of all intelligence, counterintelligence, and intelligence-related activities in the Department of Defense. The organization's charter is articulated in DoD Directive 5148.11.[1] The ATSD (IO) ensures that all activities performed by intelligence, counterintelligence, and intelligence related units are conducted in accordance with Federal law, Executive Orders, DoD directives, regulations and policies. In July 2014, this position was retitled as the Department of Defense Intelligence Senior Intelligence Oversight Official (DoD SIOO), after the position was aligned within the Office of the Deputy Chief Management Officer (DCMO).


The ATSD(IO) came into existence in December 1982, assuming the responsibilities of the Inspector General for Intelligence[2] (although there now exists a Deputy Inspector General for Intelligence in addition to the ATSD(IO)).

The ATSD(IO) is charged with the management and direction of the DoD Intelligence Oversight program. The aim of the DoD program is to institutionalize:

  • The orientation and training of all intelligence personnel in intelligence oversight concepts,
  • An internal inspection program, and
  • A channel for the reporting of questionable or improper intelligence activities to the ATSD(IO) and the DoD General Counsel, who are responsible for informing the Secretary and Deputy Secretary of Defense.

Included in the DoD IO program are the intelligence, counterintelligence, and intelligence related units, staffs, and activities of the Joint Staff, Combatant Commands, Military Services, Defense Intelligence Agency, National Security Agency, National Reconnaissance Office, and the National Geospatial-Intelligence Agency.

Office Holders[edit]

Assistants to the Secretary of Defense for Intelligence Oversight
Name Tenure SecDef(s) Served Under President(s) Served Under
Werner E. Michel unknown - 1992[citation needed] Richard B. Cheney George H. W. Bush
Walter Jajko[3] 1994–1998 William J. Perry
William S. Cohen
Bill Clinton
George B. Lotz II 1999[4] - 2005 (estimated) William S. Cohen
Donald H. Rumsfeld
Bill Clinton
George W. Bush
William Dugan (Acting)[5] September 2005 - unknown Donald H. Rumsfeld George W. Bush
Michael H. Decker[6] September 2009 - February 2014 Robert M. Gates
Leon Panetta
Chuck Hagel
Barack Obama
Michael E. Goodroe March 2014 - December 2014 Chuck Hagel Barack Obama
Wilbur R. Snyder December 2014 - August 2015 Ashton Carter Barack Obama
John P. Holland August 2015 - December 2015 Ashton Carter Barack Obama
Michael T. Mahar December 2015 – Present Ashton Carter Barack Obama


  1. ^
  2. ^ "Department of Defense Key Officials" (PDF). Historical Office, OSD. 2004. Archived from the original (PDF) on 2011-07-21. Retrieved 2011-02-01. 
  3. ^ "Archived copy". Archived from the original on 2011-05-19. Retrieved 2011-02-09. 
  4. ^
  5. ^ Wanja Eric Naef. "William Dugan". 
  6. ^ "United States Department of Defense". 

External links[edit]