In a four-day trip, the two men traveled throughout Vietnam before returning to Washington to file their reports. Krulak visited 10 locations in all four Corps zones of the ARVN and spoke with US Ambassador Henry Cabot Lodge, Jr., the head of US forces in Vietnam General Paul Harkins and his staff, 87 US advisors and 22 ARVN officers. Mendenhall went to Saigon, Huế, Da Nang and several other provincial cities, talking primarily to Vietnamese friends.