Harvey was responsible for eight assassination attempts on Castro but none of these attempts were proficient at accomplishing any foreign policy objectives. This portion of the scheme contained “an Executive Action Capability (assassination of foreign leader), a general stand-by capability to carry out assassinations when required”. Project ZRRIFLE main purpose was to spot potential agents and research assassination techniques that might be used.[1] Project ZRRIFLE and the agency's operations in Cuba funneled into on program in November 1961 when Harvey became the head of the task force for Cuba.