A US Air Force F-22 and an F-35 over Florida in May 2020.

US Air Force/1st Lt Savanah Bray

Twenty years after the arrival of the first fifth-generation jet, only a few have entered service. Fifth-gen jets are still the most advanced, but countries are already working on the next generation. The scale of those programs shows that countries are betting big on their future sixth-gen aircraft.

Some 20 years after their first appearance in the skies, fifth-generation fighters remain both the most...

Continue Reading Only 3 countries have managed to build 5th-generation fighters, but nearly a dozen are already working on 6th-gen jets