Santa Claus reviews his flight plan for his Dec. 25 trek across the globe in the North American Aerospace Defense Command and U.S. Northern Command Current Operations Center Thursday, Sept. 26, 2013, at the NORAD and USNORTHCOM headquarters at Peterson Air Force, Colo. Santa’s visit today comes in advance of the commands' annual NORAD Tracks Santa outreach effort, which is expected to reach more than 20 million unique visitors on the www.noradsanta.org website.