ABC World News Tonight with David Muir Full Broadcast - Aug. 14, 2026

By ABC News

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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

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