The flag of the United States enters the stadium during the closing ceremony for the 2020 Paralympics at the National Stadium in Tokyo, Sunday, Sept. 5, 2021. (AP Photo/Eugene Hoshiko)

Dancers perform during the closing ceremony for the 2020 Paralympics at the National Stadium in Tokyo, Sunday, Sept. 5, 2021. (AP Photo/Eugene Hoshiko)

Games mascots perform during the closing ceremony for the 2020 Paralympics at the National Stadium in Tokyo, Sunday, Sept. 5, 2021. (AP Photo/Eugene Hoshiko)

The national flag of Japan is handed over to members of the Japan Self-Defense Forces by flag bearers Motoki Iwakiri (Athletics), Tomoki Sato (Athletics), Miyuki Yamada (Swimming), Sakura Koike (Swimming), Kazuyasu Minobe (Fencing) and Keiko Yamamoto (Nurse) during the closing ceremony of the Tokyo 2020 Paralympic Games in Tokyo, Japan, Sunday, Sept. 5, 2021. (Joe Toth for OIS via AP)

Fireworks illuminate over National Stadium viewed from Shibuya Sky observation deck during the closing ceremony for the 2020 Paralympics in Tokyo, Sunday, Sept. 5, 2021. (AP Photo/Kiichiro Sato)