See the evolution of Boeing's design of the F-47, a sixth-generation stealth fighter jet, compared with competing NGAD concepts from Lockheed and others.

The NGAD is set to succeed the F-22 Raptor, which entered service two decades ago, as the US Air Force's top air dominance fighter.

Ryan Chan is a Newsweek reporter based in Hong Kong, where he previously had over a decade of experience at a local newspaper, covering China and current events around the world. His focus is on ...