Gio Benitez reports on the powerful line of storms that slammed the South and the tornado the touched down near Houston, triggering delays and cancellations at multiple airports, and Ginger Zee is tracking a major storm system that could cause more headaches as millions head home after Thanksgiving; Mary Bruce has details on the Pentagon announcing it's launching an investigation into Arizona Sen. Mark Kelly after he recorded a video with five other Democratic lawmakers urging military troops not to follow illegal orders; Alex Perez has the latest on the arrest of Morgan Geyser – who stabbed a classmate 19 times when she was 12 years old in the infamous "Slender Man" case in 2014 – after she escaped a group home by cutting her ankle monitor; and more on tonight’s broadcast of World News Tonight with David Muir.

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