How NORAD Tracks Santa - WiredNORAD is training on a daily basis to handle whatever comes up this Christmas:
The North Warning System, a network of 47 radars strung across the continent's northernmost frontier, tells NORAD when St. Nick takes off from the North Pole. Infrared satellites track the jolly old elf's flight path once he's airborne. "The satellites actually pick up an infrared signature from Rudolph's nose," says Navy Lt. Desmond James. Once Santa touches down, a little-known network of surveillance cameras called "Santa Cam" transmit images of St. Nick making deliveries. The global network went online 10 years ago, and NORAD officials swear it is used only on Christmas Eve. Four C-18 fighter jets escort Santa through Canada before handing the job over to F-16s as the sleigh enters American airspace (the movie above capture parts of last year's Christmas deliveries).