How might Iowa-class battleships be used?

What role would the Iowa-class battleships play in this campaign?

They could provide naval gunfire near Norway and serve as large, durable targets that absorb part of a missile strike aimed at the carrier force.

Their heavy guns could strike Soviet forces advancing through Norway when geography brought targets into range. This gives the battleships a direct land-campaign role on the same flank the carriers are trying to preserve. A more controversial mission places them near the carrier force as part of its screen. The battleships' size and durability might draw or absorb some missiles during a massed attack, trading their survivability for a better chance that the carriers remain operational.