ABC World News Tonight with David Muir delivers a comprehensive report on key events from August 14, 2026. The broadcast opens with Aaron Katersky covering the guilty plea of Luigi Mangione in federal court for the murder of UnitedHealthcare CEO Brian Thompson. Mangione admitted to stalking and fatally shooting Thompson in a premeditated act, revealing disturbing details about his planning. The case has drawn national attention and now moves toward sentencing.
Jay O'Brien reports on the U.S. Army’s decision to suspend all Apache helicopter test flights after a crash in Texas resulted in the deaths of two pilots. The grounding is a safety precaution while investigations determine the cause. Meanwhile, Matt Rivers highlights the actions of an air traffic controller who prevented a near-collision between two American Airlines jets on a runway, showcasing critical aviation safety measures in action. The broadcast concludes with updates on other major developments around the world.