FILE - In this May 9, 2021, file photo, Japanese athletes compete during an athletics test event for Tokyo 2020 Olympics Games at the National Stadium, in Tokyo, Japan. Tens of thousands of visiting athletes, officials and media are descending on Japan for a Summer Olympics unlike any other. There will be no foreign fans, no local fans in Tokyo-area venues. A surge of virus cases has led to yet another state of emergency. (Kyodo News via AP, File)

Blue Impulse of the Japan Air Self-Defense Force flies over the main National Stadium, Wednesday, July 21, 2021, in Tokyo. The National Stadium will host host the many of the events for the Tokyo 2020 Olympics that start July 23. (AP Photo/Eugene Hoshiko)