 On 1 June 1964, the 1405th Air Base Wing at Scott Air Force Base, Illinois was redesignated the 1405th Aeromedical Transport Wing, and assumed responsibility for the aeromedical transport mission from the 1st Group.Under the 1405th, responsibility for aeromedical evacuation missions expanded to include all of North America and the Caribbean, not only missions within the United States.The expanded mission called for augmentation of the 13th and the wing's other regular squadrons by squadrons of the Air National Guard.