Prof. John (Chris) Inglis is a former Deputy Director of the National Security Agency (NSA). The NSA has responsibility for monitoring, collecting, and processing data for foreign intelligence and counter-intelligence purposes. Their specialty is signals intelligence and the protection of U.S. communications networks and information systems. The majority of their work is clandestine. Although it does not collect human-source intelligence, the NSA has been involved in public controversy because of the incidental collection and storage of U.S. citizens' data as part of its worldwide information responsibility.