<prompt> Kǝla paragraf adǝben fuwutǝ - c. 7080 kәrmuwa dә Strela-22M lan kamzayin kate saa 1971-a Saigon fәlejin-a lan  <response>: April 1975 dәn, ngәwunzә sambisoro helikopters-a propeller-driven aircraft-a ro. War of Attrition lan, missile dәye nәm kәnәngәnzә-a nәm kәnәngәnzә-a dә zauro dunoa ro walzәna kuru jazaa dә zauro dunoa: kam fal US A-4 Skyhawk-a kam fal South Vietnamese F-5 Freedom Fighter-a dәma do Strela-2s lan kәnәngәna dәn fәlezana. 