I watched my husband drive away while the snow kept falling. Instead of chasing after him, I stayed calm. That decision changed everything.

The blizzard had already swallowed half of Chicago when Daniel Mercer pulled the SUV up outside Terminal 3 at O’Hare.

His wife, Claire, stared through the windshield at snow blowing almost horizontally across the road.

“Daniel, my flight was canceled three hours ago.”

His hands remained on the steering wheel.