PETERSON AIR FORCE BASE, Colo. (AP) — Depending on which country they're from, the kids may ask about Father Christmas, Papa Noel, Saint Nick or Santa Claus.

But those who believe all want to know one thing: where in the world the jolly old man and his sleigh full of gifts are on Christmas Eve.

For the 64th time, a wildly popular program run by the U.S. and Canadian militaries is providing real-time updates on Santa's progress to millions around the globe.

And this year, the North American Aerospace Defense Command is offering even more high-tech ways for children and parents to follow along....