Original sentence: The MiG-15 also served as the starting point for development of the more advanced MiG-17.The MiG-15 is believed to have been the most numerous jet aircraft ever made, with over 12,000 built (and perhaps over 18,000).The MiG-15 was one of the first successful swept-wing jet fighters, and it achieved fame in the skies over Korea, where it was outclassed only by the F-86 Sabre.The Mikoyan-Gurevich MiG-15 () (NATO reporting name "Fagot") was a jet fighter developed for the USSR by Artem Mikoyan and Mikhail Gurevich
Edited sentence: It achieved fame over the skies of Korea, outclassing all UN fighters except for the F-86 Sabre.The MiG-15 is the most numerous jet aircraft ever made with over 12,000 built.The MiG-15 would be one of the first successful swept wing jet fighters.The MiG-15 would be the starting point for the advanced MiG-17, which successfully downed more advanced American fighters such as the F-105 Thunderchief over Vietnam.The Mikoyan-Gurevich MiG-15 () (NATO reporting name "Fagot") was a jet fighter developed for the USSR by Artem Mikoyan