(Yahoo photo)
NORAD Santa trackers expected record holiday telling children about big man's location
Every year millions of children log in to http://www.noradsanta.org to track "Santa" around the world.

FILE - In this Dec. 24, 2010 file photo, Air Force Lt. Col. David Hanson, of Chicago, takes a phone call from a child in Florida at the Santa Tracking Operations Center at Peterson Air Force Base near Colorado Springs, Colo. Santa is already piling up monster numbers on social networking sites this season, so the volunteer Santa-trackers at NORAD are bracing for tens of thousands of calls and emails when their operations center goes live on Christmas Eve. (AP Photo)
Volunteers NORAD Tracks Santa at Peterson Air Force Base in Colorado were fielding 4,000 calls an hour Saturday morning, on pace to break a record. Santa's NORAD Facebook page exceeded 840,000 "likes" by midmorning.
The North American Aerospace Defence Command has been telling children about Santa's whereabouts every year since 1955, when a newspaper ad invited kids to call Santa on a hotline. A typo led dozens of kids to call the command.
The officers on duty played along and began sharing reports on Santa's progress. It's now a deep-rooted tradition at NORAD, a joint U.S.-Canada command.