Hawaii held its yearly ceremony on the USS Missouri at Pearl Harbor, a quiet but pointed reminder that the war's lessons still shape how the US and Japan deal with each other.

• Veterans, service members and families gathered on the ship where Japan signed its surrender in September 1945.
• Pearl Harbor holds both ends of the American war story: the 1941 attack and the surrender four years later.
• A "parks for peace" exchange has now brought students from Hiroshima to Pearl Harbor three times, tying the two cities' histories together.
• Organizers argue standing on the deck teaches more than a history book, and say preserving the ship is getting harder as the wartime generation disappears.

Outlook: Expect the memorial to lean further into student exchanges and education as fewer World War II veterans remain to tell the story themselves.