F-35 Lightning II, a 5th-gen stealth fighter, first flew in 2006, entered service in the mid-2010s, and by 2025 had over 1,000 delivered to 17 nations. F-22 Raptor, a 5th-gen air-superiority fighter, first flew in 1997 and entered service in 2005, with a top speed around Mach 2.25 and only 195 built. Chengdu J-20 Mighty…
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