A staff member guides a mock group of athletes to Tokyo's National Stadium via the warm-up track during Tokyo 2020 opening and closing ceremonies transport operations simulation media tour in Tokyo early Sunday, June 20, 2021. Tokyo 2020 Organizing Committee of the Olympic and Paralympics Games simulated transporting mock athletes and stakeholders across the city in buses early on Sunday in preparation for COVID-19 appropriate travel during the games. (Philip Fong/Pool Photo via AP)