3PM ET: Balloon shot down, SCOTUS 'burn bags', DNC demotes Iowa & more

The US military shoots down a suspected Chinese spy balloon over the Atlantic Ocean. New reporting reveals more concerns about information security at the Supreme Court. The Democratic National Committee has approved a major shakeup of the presidential primary calendar – but it’s not a done deal yet. A new national windchill record has been set in New Hampshire. And a massive train derailment prompts shelter-in-place orders for a northeastern Ohio town. To learn more about how CNN protects listener privacy, visit cnn.com/privacy