Alternate Title: NSDD 3: Crisis Management
This directive states that "A national security matter for which the Presidential decisions and implementing instructions are required more rapidly than routine interdepartment NSC [National Security Council] staff support provides may be considered in the context of crisis management". It also directs that "Crisis management shall be the responsibility of a Special Situation Group (SSG) chaired by the Vice President," and explains the role of this group in further detail.
National Security Decision Directive 3; NSDD 3
Federation of American Scientists: http://www.fas.org/