China's Getting Faster at Producing its J-20 Stealth Fighter Prototypes

The first prototype for China’s J-20 stealth fighter appeared in blurry photos in December 2010. Almost exactly four years later, the sixth J-20 has taken flight, just three weeks after the fifth.

Beijing is building J-20s at an accelerating rate. And with six of the huge, twin-engine planes in the air for testing, China is well on its way to finalizing the J-20’s design—and getting the new fighter ready for front-line service.

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