National Security Decision Directive "Crisis Management… (1981)
“ CRISIS MANAGEMENT A national security matter for which Presidential decisions and implementing instructions are required more rapidly than routine interdeparment NSC staff support provides may be considered in the context of crisis management.SPECIAL SITUATION GROUP (SSG) Crisis management shall be the responsibility of a Special Situation Group (SSG) chaired by the Vice President. The Assistant to the President for National Security Affairs; at the direction of the Vice President, will convene the SSG when the gravity of the situation warrants. ”
