usa 21st Special Operations Squadron

US Air Force

21st SOS

1939 to 2007    


21st Special Operations Squadron
Dust Devils, created as a Pursuit Squadron (Interceptor) in 1939 which served until 1946. Redesignated 21st Special Operations Squadron saw combat in Southeast Asia from November 1967 to August 1973. In 1975 was again in front line during the April evacuation of Saigon and the rescue of the SS Mayaquez in May before inactivating on September 22, 1975 at U-Tapao, Thailand.

The squadron reactivated on May 1988 at RAF Woodbridge, UK when was splitted from 67 ARRS

21st SOS was deactivated on 2007 with the retirement of the MH-53M Pave Low IV.

The replacement aircraft, the CV-22B Osprey tilt-rotor, was assigned to 7th SOS
Joined the 20th Helicopter Squadron in South Vietnam in Sep 1967. In summer 1968, the unit took on the CH-3C of 20th SOS.

The 21st SOS also flew Operation Eagle Pull, the evacuation of Vientiane, in 1975 while stationed in NKP Thailand
The 21st was also tasked Eagle Pull for the evacuation of Pnom Penh, Cambodia

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1995/07UK RAF MildenhallEGUN
1992/95UK RAF AlconburyEGWZ
1988/92UK RAF WoodbridgeEGVG
1967/75TH U-TapaoVTBU


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1998/07 S-65 H-53     MH-53M Pave Low IV
1988/98S-65 H-53
1968/75S-65 H-53
1968/75S-61 H-3

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