After former Pres. Donald Trump agreed to debate Vice Pres. Kamala Harris on ABC Sept. 10, Selina Wang reports on Trump’s Mar-a-Lago news conference, which marked his first public appearance since the debut of the new Democratic ticket; Aaron Katersky has details on the newly-released body camera video capturing the moment local police confronted the gunman who opened fire on former Pres. Trump during his July rally in Butler, Pennsylvania; Mireya Villarreal reports on the tragic death of CrossFit athlete Lazar Dukic, who appeared to drown during the first day of CrossFit Games in Fort Worth, Texas; and more on tonight’s broadcast of World News Tonight with David Muir.br br br br 00:00 Introbr 02:12 Trump and Harris agree to ABC News debate on Sept. 10br 06:02 Tropical Depression Debby triggers at least 12 reported tornadoesbr 08:59 Noah Lyles wins bronze in 200 meter after testing positive for COVIDbr 10:34 Newly released body camera video shows police confronting Trump gunmanbr 12:17 Taylor Swift concert terror plot suspect hoped to kill "as many people as possible," officials saybr 14:01 28-year-old athlete dies during CrossFit Games in Texasbr 15:26 Encouraging news about labor market helps stock market reboundbr 16:01 Third person dies in listeria outbreak tied to some deli meatsbr 16:28 Dust devil launches umbrellas high above Florida beachbr 16:44 2 giant pandas from China make public debut at San Diego Zoobr 17:11 America Strong: Rebuilding Maui one year after devastating firesbr br 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.