By Keith Coffman DENVER (Reuters) - A powerful Christmas Eve snowstorm descending on much of North America will not slow Santa Claus as he delivers presents to good girls and boys, U.S. military officials who track his annual flight said on Saturday. "Santa is an excellent pilot and since he lives on the North Pole he knows how to navigate through adverse weather conditions," said John Cornelio, spokesman for the North American Aerospace Defense Command (NORAD), based at Peterson Air Force Base in Colorado Springs. The National Weather Service has issued winter storm and blizzard warnings and watches for the western United States all the way up to northern-tier states.
