I will suspect the worst if one group parks in the Sea of Japan, and the other in the Yellow Sea, on either side of Korea. This would complete an anti ballistic missile umbrella for both China and South Korea.
Both groups had better have intensive antisub operations, because fat boy has already sunk one ship, the ROKS Cheonan.
And we still owe them some major payback for that.
Important note: As of 2016, the ROK Navy has about 70,000 regular personnel including 29,000 Republic of Korea Marines. In addition, there are about 160 commissioned ships in service with the ROK Navy, including about 10 submarines, 110 surface combatants and patrol vessels, 10 amphibious warfare ships, 10 mine warfare ships, and 20 auxiliary ships.
And it is highly likely that the Japanese navy will be keeping a close eye on things as well. As well as the Russians.
Hey we beat up Boucher what more do you want?