Under Ted Shackley's leadership from 1962 to 1965, JMWAVE grew to be the largest CIA station in the world outside of the organization's headquarters in Langley, Virginia, with 300 to 400 professional operatives (possibly including about 100 based in Cuba) as well as an estimated 15,000 anti-Castro Cuban exiles on its payroll.
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The University of Miami authorities denied knowledge of the CIA operation (though Shackley would claim privately that University President Henry King Stanford was fully aware) and JMWAVE changed its main front company name from Zenith to "Melmar Corporation".