While a grain or two of sea salt is needed, there's an interesting article on Covert Shores from Naval News about the Zumwalt Class DDG and the proposed installation of hypersonic missiles.
(Obviously not a current capability, there's currently a 155mm gun mount there).
https://www.navalnews.com/naval-news...ew-capability/
What got my interest was not the "hypersonic ballistic missiles" bit,
vis a vis US and China getting their arms race on, but the location of the VLS launchers.
They are {depicted} in banks along the sides, and the rear ones are
adjacent to the Flight Deck!
Click on the picture and expand it. There might be a need for a FOD walkdown after a missile launch. 
Pro Tip for the future COs of the Zumwalt class DD's: Don't launch those when your helicopter is turning up or shutting down.