Seal of the United States Central Security Service, part of the National Security Agency.  The seal dates from 1996.  The five-pointed gold mullet is a symbol of ideologies representing the services' common beliefs. Between each point of the mullet is a symbol of the four cryptologic service elements and the American eagle as blazoned on the NSA emblem. The emblems appear in the following order from the upper right: United States Marine Corps; Army Intelligence and Security Command; National Security Agency; Air Intelligence Agency; and the Naval Security Group.  Each are equally balanced around a five point star on which is centered the symbol of NSA/CSS, who "provides the funding, direction, and guidance to all of America's SIGINT activities".  For more information, see here.  The blue background of the CSS emblem represents fidelity and steadfastness.
Extracted from PDF version of 50th Anniversary Brochure (direct PDF URL [1]).
U.S. Government