What should I bring for the trip to Pearl Harbor?

A camera and maybe sunscreen or a hat is all we'd recommend as bags and swimwear are not permitted in the memorial.  There are lockers outside the memorial where you can store your belongings for a small fee should you choose to. 1. What should I bring for the trip to Pearl Harbor? 2. Pearl Harbor and Oahu Circle Island Tour From Maui, Kauai & Hawaii