I have made reservations for the 45 minute USS Arizona Memorial tour. Where and how do you make reservations for the USS Missouri? Is there a cost for the Missouri tour?
Thanks in advance.

You can purchase tickets for the USS Missouri online - https://ussmissouri.org/plan-your-visit/tours#

ussmissouri.org Be aware that there are private tour companies which cannot take you places the official tour does. The Missouri is not located with the USS Arizona Memorial, it is on Ford Island and you can't go on the island on your own. You are shuttled from Pearl Harbor. Be sure to visit the Pacific Aviation Museum at Ford Island as well. When you mention a "45 minute tour" of USS Arizona Memorial, I'm concerned. No private tour will allow you to stop on the actual Memorial. You must book the one run by the park service.