Hadrian, the factory builder and defense manufacturer, raised $1.37 billion in venture capital and is now valued just shy of $8 billion.Why it matters: American reindustrialization is catching on beyond niche national-security and investor communities.What they're saying: "We were early," chief executive Chris Power tells Axios. "This has been a five-year slog, and only 18 months ago everyone went, 'Oh, God, manufacturing is super important, and we really need to create new American manufacturin...