In this interview Heinz discusses how he came to work in the Office of International Security Affairs [ISA] in the Department of Defense [DOD]; the changeover in the DOD between the Dwight D. Eisenhower and John F. Kennedy Administrations; Heinz’s view of the Bay of Pigs; the regular operations and organization within ISA, including the different regional desks’ responsibilities; relationships between the ISA and other agencies; ISA as “the little State Department”; differences of opinion between DOD and the State Department, the CIA, the Defense Intelligence Agency, and the Joint Chiefs of Staff; the debate over whether to put troops in Laos; Robert S. McNamara and Roswell L. Gilpatric; the status of Okinawa; the question of U.S. defense perimeters; and W. Averell Harriman’s trip to Geneva and the neutralization solution for Laos, among other issues.