I imagine for the Mk1/2 they are using in house teams but for the hopper they contracted out the construction to a company that builds water towers (Caldwell Ta

I imagine for the Mk1/2 they are using in house teams but for the hopper they contracted out the construction to a company that builds water towers (Caldwell Tanks). I mean - it makes sense, it's really just a water tank with an extra bulkhead that SpaceX just so happens to want to attach a rocket engine to...