With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The National Security Agency has a set of intelligence responsibilities.
text_B: The National Security Agency -LRB- NSA -RRB- is a military intelligence organization and a constituent of the United States Department of Defense -LRB- DOD -RRB- .. United States Department of Defense. United States Department of Defense. intelligence organization. intelligence agency. Department of Defense. United States Department of Defense. The NSA is responsible for global monitoring , collection , and processing of information and data for foreign intelligence and counterintelligence purposes , a discipline known as signals intelligence -LRB- SIGINT -RRB- .. counterintelligence. counterintelligence. signals intelligence. signals intelligence. NSA is concurrently charged with protection of U.S. government communications and information systems against penetration and network warfare .. protection. Information assurance. Although many of NSA 's programs rely on `` passive '' electronic collection , the agency is authorized to accomplish its mission through active clandestine means , among which are physically bugging electronic systems and allegedly engaging in sabotage through subversive software .. clandestine means. clandestine operations. bugging. bugging. sabotage. sabotage. subversive software. Stuxnet. Moreover , NSA maintains physical presence in a large number of countries across the globe , where its Special Collection Service -LRB- SCS -RRB- inserts eavesdropping devices in difficult-to-reach places .. Special Collection Service. Special Collection Service. SCS collection tactics allegedly encompass `` close surveillance , burglary , wiretapping , breaking and entering . ''. Unlike the Defense Intelligence Agency -LRB- DIA -RRB- and the Central Intelligence Agency -LRB- CIA -RRB- , both of which specialize primarily in foreign human espionage , NSA does not unilaterally conduct human-source intelligence gathering , despite often being portrayed so in popular culture .. Defense Intelligence Agency. Defense Intelligence Agency. Central Intelligence Agency. Central Intelligence Agency. human espionage. Clandestine HUMINT. portrayed so in popular culture. NSA in popular culture. Instead , NSA is entrusted with assistance to and coordination of SIGINT elements at other government organizations , which are prevented by law from engaging in such activities without the approval of the NSA via the Defense Secretary .. As part of these streamlining responsibilities , the agency has a co-located organization called the Central Security Service -LRB- CSS -RRB- , which was created to facilitate cooperation between NSA and other U.S. military cryptanalysis components .. Central Security Service. Central Security Service. Additionally , the NSA Director simultaneously serves as the Commander of the United States Cyber Command and as Chief of the Central Security Service .. Central Security Service. Central Security Service. NSA Director. Director of the National Security Agency. United States Cyber Command. United States Cyber Command. Originating as a unit to decipher coded communications in World War II , it was officially formed as the NSA by President Harry S. Truman in 1952 .. World War II. World War II. Harry S. Truman. Harry S. Truman. Since then , it has become one of the largest U.S. intelligence organizations in terms of personnel and budget , operating as part of the Department of Defense and simultaneously reporting to the Director of National Intelligence .. U.S. intelligence organizations. U.S. intelligence community#Organization. Department of Defense. United States Department of Defense. Director of National Intelligence. Director of National Intelligence. NSA surveillance has been a matter of political controversy on several occasions , such as its spying on anti-Vietnam-war leaders and economic espionage .. its spying on anti-Vietnam-war leaders. #Vietnam War. economic espionage. economic espionage. In 2013 , the extent of some of the NSA 's secret surveillance programs was revealed to the public by Edward Snowden .. Edward Snowden. Edward Snowden. According to the leaked documents , the NSA intercepts the communications of over a billion people worldwide , many of whom are United States citizens , and tracks the movement of hundreds of millions of people using cellphones .. Internationally , research has pointed to the NSA 's ability to surveil the domestic Internet traffic of foreign countries through `` boomerang routing '' .
related.