Faith Abubey and Victor Oquendo report on the devastation left behind by deadly Hurricane Helene, the strongest storm on record to hit Florida's Big Bend region, and Ginger Zee tracks the hurricane's remnants as they spread across the Tennessee and Ohio valleys; Ian Pannell has details on whether the leader of Hezbollah, Hassan Nasrallah, was killed in an Israeli airstrike the IDF says targeted a Hezbollah stronghold in Beirut; David Muir remembers the life and legacy of actress Dame Maggie Smith, whose career spanned more than 60 years; and more on tonight's broadcast of World News Tonight with David Muir.