I was reading about a new Chinese mini sub - a badly needed distraction - and saw a spurious reference to a new US 'Columbia Class' SSBN which was alien to me. Obviously, I'd missed it, and apparently many here as well. I searched and saw no reference whatsoever to it here at FR, so rather than post a single article, there are a number below in the comments for clickable links, in addition to the linked Report to Congress.