Athletes adjust to new normal at Tokyo Olympics, Covid booster shot update, and breakthrough Covid cases. Watch “NBC Nightly News With Lester Holt” at 6:30 p.m. ET / 5:30 p.m. CT (or check your local listings). » Subscribe to NBC News: » Watch more NBC video: Connect with NBC Nightly News online! NBC News App:… Continue reading NBC Nightly News Broadcast (Full) – July 24th, 2021