Southeast Asia, most reciprocating engine types were retired by the USAF. UH-1s and CH-3s were operated, the latter by the 20th Special Operations Squadron. The 4410th Combat Crew Training Wing was activated at Hurlburt Field on December 1, 1965, later moving to England AFB, Louisiana, in July 1969. "In early 1967 the wing comprised four squadrons; two were at Hurlburt, the 4408th CCTS training C-123 crews and the 4409th training A-1E and T-28 pilots, including Vietnamese students. The 4410th CCTS at Holley Field primarily trained O-1 Forward Air Controllers and students flying the U-10 and O-2. In December the 4407th CCTS would be activated to assume the mission of the 4410th while that unit began training crews in the new OV-10 Bronco FAC aircraft. The fourth squadron, the 4412th CCTS was at England AFB, training C-47D and AC-47D pilots. On 1 April the 4532nd CCTS was activated to fly A-37Bs and assigned to the Wing. Later in the year both the 4412th and 4532nd were reassigned to the 1st ACW at England AFB." The first jet-augmented Fairchild C-123K Provider arrived at Hurlburt Field on January 5, 1968, and the first of 76 of the type to be ferried to Vietnam by the 319th Air Commando Squadron departed on April 10. The 20th Special Operations Squadron reactivated in 1976 at Hurlburt Field, the unit mission remaining unconventional warfare and special operations using UH-1N gunships and CH-3Es. The HH-53H Pave Low replaced the CH-3E in 1980, providing a long range, heavier lift helicopter capability. "The Air Force's newly operational fleet of nine HH-53H Pave Low CSAR helicopters was abruptly transferred to the special operations forces in response to the failed Iranian hostage rescue attempt and the lack of dedicated long-range vertical lift platforms." "The helicopters brought 200 new military jobs to Hurlburt, bringing the number of military positions at the base to 3,200." In the early 1960s, Hurlburt was utilized as a Strategic Air Command dispersal base for B-47s of the 306th Bomb Wing at MacDill AFB, Florida. Most facilities were located west of the runway, including hangars, through the 1980s. With the growth and importance of special operation capabilities, Lockheed AC-130 Spectre/Spooky gunship and MC-130 Combat Talon/Combat Spear operations have remained on the western flight line, while additional hangars and ramps have been constructed northeast of the intersection of the main runway and the Doolittle runway. These newer facilities are home