Boeing will add inspections for its 737-9 fleet after a mid-flight emergency revealed the potential of loose bolts on plugged exit doors for several planes.
Why it matters: The plane model is remaining grounded for the foreseeable future, as the company faces a lawsuit.
An Arctic outbreak tied to a piece of polar vortex was bringing subfreezing temperatures across the U.S., leaving over 110 million people under wind chill warnings and advisories Sunday evening.
The big picture: The National Weather Service warned parts of the Midwest would again experience "near-record, dangerously low temperatures and wind chills," with wind chills below negative 30 degrees below zero from the Northern Rockies to northern Kansas and into Iowa, as the state prepared for Monday's first-in-the-nation caucuses.
