The east coast of the United States is preparing for what weather forecasters expect to be one of the biggest storms ever to hit the mainland.
Hurricane Sandy

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Travelers surround a flight monitor showing cancelled flights at LaGuardia airport in New York October 28, 2012.

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Mike Strobel fills sand bags for his business, Mike's Carpet Connection, as Hurricane Sandy bears down on the East Coast, Sunday, Oct. 28, 2012, in Fenwick Island, Delaware.

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Large waves generated by Hurricane Sandy crash into Jeanette's Pier in Nags Head, N.C., Saturday, Oct. 27, 2012 as the storm moves up the east coast.

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President Barack Obama, center, attends a briefing with Federal Emergency Management Agency administrator Craig Fugate, right, at the National Response Coordination Center at FEMA Headquarters in Washington, on Sunday, Oct. 28, 2012.