Sent_en: 2zh The fatal accident is not the only such problem to beset the F-22, which despite being billed by the Air Force as their most advanced fighter has never been deployed to combat since coming into service seven years ago.
Sent_yy: 这次死亡事故并不是困扰F-22战斗机的唯一问题，这款战斗机尽管被空军宣称是其最先进的战斗机，但是自从7年前投入使用以后还从来没有在战斗中使用过。