TBT 1/5 The Defense Special Missile and Aerospace Center was created in April 1964 based on a Department of Defense directive, signed by then Secretary of Defense Robert McNamara, to address Soviet advances in missile and space capabilities. 2/5 DEFSMAC, overseen jointly by DIA and NSA, was tasked with management and technical control of DoD missile and space intelligence collection and to provide around the clock analysis and reporting of foreign missile and space events.