LONDON, UNITED KINGDOM - JANUARY 19: Stranded travelers wait in line at Heathrow airport Terminal 5 to reschedule flights after snow hit the region January 19, 2013 in London, England. Heavy snow around the UK caused hundreds of flight cancelations at Heathrow, with more travel disruptions expected during a snowy weekend. Approximately 3,000 schools were closed in England, Wales and Scotland. (Photo by Paula Bronstein/Getty Images)