A hindsight agenda for the prewar US Navy

What would you change as US Chief of Naval Operations from 1930 to 1941 if you retained knowledge of the coming war?

Prioritize carriers, specific Pearl Harbor preparations, reserve basing units, and the numbers and long-range support needed for submarine operations.

Hindsight would improve readiness across several areas rather than produce one miracle weapon. The priorities are more deliberate Pearl Harbor preparations, deployable base-support units, stronger long-range submarine operations, and continued carrier development before the Pacific War.