The Assistant Secretary of Defense for Networks & Information Integration (ASD(NII)) was an appointed position that provided management and oversight of all DoD information technology, including national security systems. The ASD(NII) also served as the Chief Information Officer (CIO) of the United States Department of Defense (DoD), a position distinct from the ASD and governed by the Clinger-Cohen Act. The ASD(NII)/DoD CIO was the principal staff assistant and advisor to the Secretary of Defense and Deputy Secretary of Defense on networks and network-centric policies and concepts; command, control and communications (C3); non-intelligence space matters; enterprise-wide integration of DoD information matters; Information Technology (IT), including National Security Systems (NSS); information resources management (IRM); spectrum management; network operations; information systems; information assurance (IA); positioning, navigation, and timing (PNT) policy, including airspace and military-air-traffic control activities; sensitive information integration; contingency support and migration planning; and related matters. The ASD(NII)/DoD CIO had responsibilities for integrating information and related activities and services across the Department of Defense. The ASD(NII)/DoD CIO also served as the DoD Enterprise-level strategist and business adviser from the information, IT, and IRM perspective; Information and IT architect for the DoD enterprise; and, DoD-wide IT and IRM executive. The Director, Defense Information Systems Agency (DISA), reported to the ASD(NII)/DoD CIO. In August 2010, Secretary of Defense Robert Gates announced that the position of ASD(NII) would be eliminated. On January 11, 2012, the position of ASD(NII) was disestablished. Most of the position's responsibilities were retained by the DoD CIO.