In December 2016, Harris led the military commemoration activities for the 75th anniversary of the attacks on Pearl Harbor and Oahu. On 5 December, he paid tribute to Japanese-Americans who served in World War II. He delivered the keynote speech during National Pearl Harbor Remembrance Day, 7 December, and accompanied President Barack Obama and Japanese Prime Minister Shinzō Abe to render honors at the USS Arizona Memorial on 27 December. The visit – the first by a Japanese Prime Minister to the Memorial – was hailed by President Obama as "a historic gesture of reconciliation."