Aaron Katersky has details on what unfolded inside a federal courtroom as Luigi Mangione pleaded guilty, admitting to killing UnitedHealthcare CEO Brian Thompson in cold blood and revealing how he hunted him down; Jay O’Brien has the latest on the U.S. Army temporarily grounding all Apache helicopter test flights following a crash in Texas that left two pilots dead; Matt Rivers reports on the air traffic controller credited with averting a catastrophe after two American Airlines jets with the same flight number were headed in the same direction; and more on tonight’s broadcast of World News Tonight with David Muir.

00:00 Intro
02:05 Luigi Mangione pleads guilty in UnitedHealthcare CEO's murder
06:07 Emergency flood evacuations and rescues continue across the Midwest
07:35 Tracking the days-long flood and storm threat in the Midwest
08:27 Tropical Storm Lala gains strength ahead of landfall on Hawaii's Big Island
09:27 U.S. Army temporarily grounds all Apache training flights after deadly crash
10:21 Potentially "disastrous" midair catastrophe averted thanks to air traffic controller
11:45 Trump takes White House ballroom renovation fight to the Supreme Court
14:01 Authorities: Fugitive wanted for murder arrested after 45 days on the run
15:17 Venue for murder trial of disgraced attorney Alex Murdaugh to be moved
15:59 Military pilot seen walking away from fighter jet crash in new images
16:35 Spectacular meteor spotted shooting over Washington state
16:49 Recall of nearly 1.6 million egg cartons upgraded to highest risk level by FDA
17:13 Lost masterpiece recovered after messy apartment eviction in Milwaukee
17:40 America Strong: Community comes together to thank firefighters after Washington state wildfires

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.

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