 The JCS response was that the proposal would still require an infeasible number of troops to be stationed along the barrier and would present difficult construction/logistical problems.Also in late 1965 or early 1966, Jerry Wiesner and George Kistiakowsky persuaded McNamara to support a summer study program in Cambridge for the group of 47 prominent scientists and academics that made up the JASON advisory division of the Institute for Defense Analysis.The subject of the study was to find alternatives to the majorly unsuccessful gradual aerial bombing campaign in North Vietnam advocated by McNamara.