The Assistant to the Secretary of Defense for Intelligence Oversight, or ATSD(IO) is responsible to the 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. 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.