Rob Marciano tracks the powerful weather system marching east that’s put millions under tornado threat and brought at least 16 confirmed tornadoes to four states; Gio Benitez has details on the former and current Boeing employees testifying about safety concerns on Capitol Hill; Mireya Villarreal reports on the court appearance of the four suspects accused in the murder of two Kansas mothers who were on their way to pick up children for a birthday party; and more on tonight’s broadcast of World News Tonight with David Muir. 00:00 Intro 02:46 Millions under tornado threat as powerful weather system marches east 05:33 Impeachment charges dismissed against DHS Secretary Mayorkas 07:19 Arizona Republicans block legislation to repeal near-total abortion ban 09:42 Whistleblower takes on Boeing at Senate hearing on safety culture 11:57 Israeli military base attacked by Iran-backed militant group Hezbollah 13:58 Grandmother at center of Kansas missing mothers' alleged murder plot arraigned 15:44 Biden campaigns in battleground Pennsylvania as Trump faces criminal trial 17:27 Authorities: Officer shot during ambush in Albany, New York 17:52 NBA bans Toronto Raptors' Jontay Porter for life over gambling scandal 18:06 NASA confirms International Space Station object crashed through Florida home 18:30 Hundreds of ballerinas gather at New York's Plaza Hotel to break world record ABC World News Tonight with David Muir delivers the news that matters most. Watch to get the latest news stories and headlines from around the world. Follow ABC World News Tonight on... Instagram: https://www.instagram.com/abcworldnewstonight/ TikTok: https://www.tiktok.com/@abcworldnews X (formerly Twitter): https://twitter.com/ABCWorldNews Facebook: https://www.facebook.com/WorldNewsTonight Threads: https://www.threads.net/@abcworldnewstonight ABC News is your trusted source for breaking news, analysis, exclusive interviews, headlines, and videos: https://abcnews.go.com/ Subscribe to ABC News on YouTube: https://bit.ly/2vZb6yP Watch full episodes on Hulu: http://abcn.ws/3bzvQQn #WorldNewsTonight #DavidMuir #News #ABCNews #Weather #Tornado #Travel #Boeing #Whistleblower #Senate #Safety #Kansas #TrueCrime #Custody #NewYork #PlazaHotel #Ballet #Ballerina #Dance #WorldRecord