Faith Abubey reports on the dangerous system snarling holiday travel as it sweeps across the country with powerful winds and blinding snow; Ginger Zee tracks the storm and has the New Year's Eve forecast; Rhiannon Ally has new details on the investigation into the deadly midair collision involving two helicopters and the victims that have been identified; Selina Wang has the latest on President Trump's vow to begin rebuilding Gaza "as quickly as we can" – if Hamas disarms – following his meeting with Israeli PM Benjamin Netanyahu; and more on tonight's broadcast of World News Tonight.