Definitions for "National Security Agency"
(NSA) : A branch of the U.S. Department of Defense, responsible for ensuring the security of American communications and for breaking into the communications of other countries.
the United States cryptologic organization that coordinates and directs highly specialized activities to protect United States information systems and to produce foreign intelligence information
Agency of the U. S. government responsible for intercepting foreign communications for intelligence reasons and for developing crypto systems to protect U. S. government communications.
Keywords:  nato, shelf, off