The one in Pusan, perhaps. Had all three of them been around any particular spot, the Norks or ChiComs might have had reason to be concerned.
Part of this is showing the flag, part of it is normal crew rotation. Frankly, the article in question is written by the same type of people who get their panties in a wad by a carrier relief and suddenly think an attack on Iran is imminent.
Face it--if we wanted to play ball or shove the bat up an enemy's ass, we certainly wouldn't telegraph our punches like that.