It is, of course, Christmas Eve, and that means Santa Claus is coming to town tonight. You can track his flight with the help of the North American Aerispace Defense Command. He's already delivered nearly five billion gifts around the world. Right now, he just passed Iceland, making his way to the Azores in Portugal. Every Christmas Eve for the past 68 years, Norad has tracked Santa's sleigh. Norad says don't try to stay awake though for Santa because he only stops by when the little ones are fast asleep.