Passengers sit and sleep on the floor as they wait for flights, many of which were delayed or canceled due to heavy snowfall, at Narita International Airport, outside of Tokyo, Tuesday,

 

              Passengers sit and sleep on the floor as they wait for flights, many of which were delayed or canceled due to heavy snowfall, at Narita International Airport, outside of Tokyo, Tuesday,
Passengers sit and sleep on the floor as they wait for flights, many of which were delayed or canceled due to heavy snowfall, at Narita International Airport, outside of Tokyo, Tuesday, Jan 15, 2013. This winter's first snow in the Tokyo area severely disrupted travel. (AP Photo Nick Ut)
Tags: Sleep