By Justin Sullivan (GETTY) – Feb 8, 2013
SAN FRANCISCO, CA - FEBRUARY 08: United Airlines passengers line up to rebook flights that were canceled due to weather on February 8, 2013 in San Francisco, California. Thousands of flights to the East Coast were canceled as a potentially historic blizzard is set to dump up to three feet of snow in the Northeast from New York City to Boston. (Photo by Justin Sullivan/Getty Images)
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