This doesn't say what we'll put there, however:
Air and naval assets, to include two Navy ships in the Black Sea, will be available if requested for all manner of contingencies in support of -- and in consultation with -- the Russian government.
I'd think Georgia and Turkey would be likely places for our forces to stand in readiness.
I wonder if we'll have an amphibious ship with helicopters and Marines as part of the Black Sea force?
Technically, the press release doesn't say warships. But what else would make sense if the contingency is to rescue, secure, and evacuate Americans in an emergency?