On September 2, 1945, Japan formally surrendered aboard the battleship U.S.S. Missouri in Tokyo Bay. President Truman declared this to be V-J Day.
Among the U.S. troops entering Japan during the occupation was my father, Lt. C. M. Williams, who arrived in Tokyo Bay on September 8, 1945. He and Lt. J. Flavin were the only veteran combat pilots in Japan during the first months of the occupation.* Top U. S. military brass said a veteran battle pilot had to lead the three ship B-25 formation that flew around the perimeter of Japan every day to show force to the Chinese Communists who were taking over China at the time. So, C. M. Williams and J. Flavin alternated leading the daily B-25 formation. But, (in line with sometimes normal top military brass stupidity) they were not allowed to carry ammunition in the B-25's guns!
Here's some footage of the daily B-25 flight around the coast of Japan. My father, the pilot in the first part of the clip, is taking the video of the Japanese coast in the last part of the clip and narrating.
*The other Pacific theater pilots had accumulated enough longevity points to be sent back to the States.