Norad Santa tracker: The origin story [Video]

The Christmas tradition has become nearly global in scope: Children from around the world track Santa Claus as he sweeps across the earth, delivering presents and defying time.

Each year, at least 100,000 kids call into the North American Aerospace Defense Command to inquire about Santa’s location. Millions more follow online in nine languages, from English to Japanese.

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On any other night, Norad is scanning the heavens for potential threats, such as last year’s Chinese spy balloon. But on Christmas Eve, volunteers in Colorado Springs are fielding questions like, “When is Santa coming to my house?” and, “Am I on the naughty or nice list?”

“There are screams and giggles and laughter,” said Bob Sommers, 63, a civilian contractor and Norad volunteer.

Sommers often says on the call that everyone must be asleep before …