Rubuta ci gaba ga wannan sakin layi - Zai iya gano tushensa zuwa "Rukunin Bincike na 21", wanda aka kunna a ranar 1 ga Fabrairu 1940 a Moffett Field, California. Ya shiga cikin fada a tsibirin Philippine, daga 8 ga Disamba 1941. An kashe shi a ranar 2 ga Afrilu 1946, daga baya aka kunna shi a matsayin "Rukunin Helicopter na 21", kuma an sake sake shi. Sa'an nan kuma aka kunna don yakin Vietnam a ranar 30 ga Yuni, 1967, an sanya shi zuwa Tactical Air Command, daga baya aka sake sanya shi "21st Special Operations Squadron" a ranar 1 ga Agusta, 1968. Squadron ya shiga cikin duka Operation Frequent Wind, da kuma abin da ya faru na Mayaguez
Ka yi haƙuri. Baya ga ayyukanta na yaƙi, rukunin ya shiga cikin ayyukan agaji da yawa.