A downed US jet, a bombed embassy, and 25 years of rumors about how China built its first stealth fighter

• China continues to expand its fleet of J-20 stealth jets and to operate them farther from home.
• The J-20's progress has been accompanied by reports that China stole its tech from the US's F-22.
• There are also suspicions that Beijing lifted hardware from the wreck of another US stealth jet.

As China's fleet of J-20 stealth fighters grows, so do suspicions about where Beijing got the technology for it.