This article employs newly declassified documents from the National Archives in Washington and London to re-examine foreign policymaking of the Nixon Administration during the Cienfuegos crisis of 1970. The article seeks to answer two fundamental questions with regard to policy decision-making during the crisis: why did the Administration pursue a public policy of ‘business as usual’ while cloaking the crisis in extreme secrecy, and how was this achieved? Answers to these questions can be found in the unique situation the Administration found itself during the ‘Autumn of Crises’, and in Kissinger’s manipulation of NSC mechanisms and procedures, respectively.