Superstorm threat launches mass evacuations on East Coast

A notice with Hurricane preparedness instructions is left by the landlord on the front door of a building on the Upper West Side of Manhattan, Saturday, Oct. 27, 2012 in New York. As Hurricane Sandy approaches the New York region, residents of some flood-prone areas have been told to evacuate and officials are preparing for a possible transit system shutdown. (AP Photo/Mary Altaffer)