SANTA TRACKER EXPLAINED The director of operations at the joint US-Canadian North American Aerospace Defense Command (NORAD) explains the history of the annual tradition of the center's Santa tracker that follows Saint Nick's journey across the globe. "Santa is an unbelievable aviator (...) In the 69 years that we've been tracking Santa, it's the same thing. He's very safe," says Major-General William Radiff. Video by Agence France-Press | Philstar.com