[dotnet00]

That's a very good point, I could've sworn Tory Bruno had said that the line had been retooled and all the remaining cores were in storage, but the closest tweet to that seems to be referring to having the engines in storage.

[panick21_]

I think he did say the line was retooled, but the factory is used for different rockets at the same time. The Vulcan and the Atlas were always in production at the same time.