cbs jamie yuccas is in tokyo. reporter: team u.s.a. simone biles showed off her signature vault in training today with none of the usual spectators because of covid relations. while she crushed the landing but is unsure how she ll do the actual competition without the energy of a crowd. tonight more than 90 cases of covid in people connected to the games. u.s. volleyball player, taylor crabb and four other athletes sidelined by positive covid tests. first lady joe biden arrived in tokyo today ahead of friday s opening ceremony, as the city logged nearly 2,000 new daily cases alone, a six-month high. but the circulating virus isn t the only issue at these games, as preparations for the opening extravaganza continued, the events creative director was immediately fired after this video surfaced. a 1998 comedy skit in which he poked fun at the holocaust. so really the country needs the athletics to start happening.