Yeah, the bulk of the gap is probably surface combatants and submarines. The Navy is pretty seriously hamstrung by the continued decline of American shipbuilding and failing recruitment/retention efforts. It’s quite clear that they would like many more vessels to prep for China as a “pacing challenge” but can’t do it with current budgets and staff levels. ESBs have a part to play by freeing up others for peer warfare roles, but what is really needed are more combatants in the water.