<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngo-October 1965, i-United States Air Force USAF 20th Helicopter Squadron yasungulwa eTan Son Nhut Air Base eNingizimu Vietnam, ekuqaleni yayihlonyiswe ngezindiza ezinophephela emhlane i-CH-3C. Ngo-June 1967 UH-1F futhi UH-1P nazo kwanezelwa yokusungula iyunithi sika, futhi ekupheleni konyaka lonke iyunithi yayisishintshile kusukela Tan Son Nhut ukuba Nakhon Phanom Royal Thai Air Force Base, ne CH-3s ukudluliselwa 21st Helicopter Squadron. Ngomhlaka 1 Agasti 1968, iyunithi yaqanjwa kabusha ngokuthi yi-20th Special Operations Squadron. Ama-UH-1s we-20th SOS ayaziwa ngokuthi amaGreen Hornets, avela kumbala wawo, i-camouflage enemibala emibili eluhlaza okwesibhakabhaka eluhlaza okwesibhakabhaka nokunsundu yayithwalwa, kanye nesiginali yomsakazo Hornet. Indima eyinhloko yalezi izindiza ezinophephela emhlane kwakuwukufaka nokukhipha amaqembu okuhlola, ukuhlinzeka ngesembozo semisebenzi enjalo, ukuqhuba impi engokwengqondo, nezinye izindima zokusekela imisebenzi eyimfihlo ikakhulukazi eLaos naseCambodia ngesikhathi okuthiwa iMpi Yobumfihlo  <response>: . futhi. 