Non-Sequitur points out that any carrier in the Atlantic would be assigned to the 2nd Fleet and loaned to the 4th Fleet as needed.
My thought is that assigning the USS Bush to the 4th Fleet and basing it in Mayport (and loaning it elsewhere as needed) would demonstrate that the 4th Fleet is meant to be a serious and permanent projection of power in an increasingly troubled area on our doorstep and not simply a reorganization of top brass.
OK, makes sense to me. Coming out of the blue as it were and my low caffeine state it didn’t click.