 It participated in the 1962 Cuban Missile Crisis and trained in electronic countermeasures and conducted combat operations in Southeast Asia in the late 1960s.Reassigned to SAC's Fifteenth Air Force in 1970, the 4th assured that assigned units were capable of conducting strategic aerospace warfare using intercontinental ballistic missiles, long-range bombardment, and air refueling resources, according to the Emergency War Order.In addition, the division assumed airborne command and control responsibilities that consisted of supporting auxiliary airborne command post aircraft.