transportation December 21, 2023 1:09 pm Preventative de-icing is part of your plane's itinerary Here’s how de-icing works, and when and why it’s necessary. News4’s Joseph Olmo reports. Local 1:38 Waymo self-driving cabs seen cruising around DC 2:39 States must see if bridges need more protection, NTSB chair testifies 2:27 A cyberattack temporarily shut down Metro's website last week 1:55 Demolition of portion of Key Bridge set for Monday 2:07 Senate-approved FAA bill adds flights at Reagan National