http://en.wikipedia.org/wiki/Nsa<br />The National Security Agency/Central Security Service (NSA/CSS) is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S. government communications and information systems, which involves cryptanalysis and cryptography.<br /><br />Agency overview<br />Formed November 4, 1952<br />Preceding agency Armed Forces Security Agency<br /><br />Headquarters Fort Meade, Maryland<br /><br />Agency executives General Keith B. Alexander, USA, Director<br />John C. Inglis, Deputy Director<br />Parent agency United States Department of Defense<br />The National Security Agency is divided into two major missions: the Signals Intelligence Directorate (SID), which produces foreign signals intelligence information, and the Information Assurance Directorate (IAD), which protects U.S. information systems<br />http://en.wikipedia.org/wiki/Roja
