People walk past a parked bulldozer after it was used to scrape the beach in order to build up a sand barrier ahead of Hurricane Sandy on Plum Island in Newbury, Massachusetts October 28, 2012. Hurricane Sandy could be the biggest storm to hit the United States mainland when it comes ashore on Monday night, bringing strong winds and dangerous flooding to the East Coast from the mid-Atlantic states to New England, forecasters said on Sunday. Sandy could have a brutal impact on major cities in the target zone like Boston, New York, Washington, Baltimore, Philadelphia, one of the most densely populated regions of the country. REUTERS/Jessica Rinaldi (UNITED STATES - Tags: ENVIRONMENT)