 The USAF had, however, planned for the RF-101C to be gradually phased out of USAF service in favor of the McDonnell RF-4C Phantom II and the aircraft remained with the 184th TRS for only a brief period of time, and in 1970 was retired.Following their withdrawal from the Vietnam War, numerous USAF F-100D Super Sabres were turned over to the Air National Guard.Tactical Air Command realigned the 151st into a Tactical Fighter Group in 1972, and equipping the unit with Vietnam Veteran F-100D and twin-seat F-100F Trainers.