Commuters, including one man dressed for Halloween, cross New York's Brooklyn Bridge, Wednesday, Oct. 31, 2012. The floodwaters that poured into New York's deepest subway tunnels during superstorm Sandy may pose the biggest obstacle to the city's recovery from the worst natural disaster in the transit system's 108-year history.

In this picture taken through a fence, a 2-week-old lion-tailed macaque clings to his mother Yana, at the Ramat Gan safari near, Tel Aviv, Israel on Wednesday, Oct. 31, 2012. Three monkeys were born in the last three weeks at the safari.

Waves wash over a roller coaster from a Seaside Heights, N.J. amusement park that fell in the Atlantic Ocean during superstorm Sandy on Wednesday, Oct. 31, 2012. New Jersey got the brunt of the massive storm, which made landfall in the state and killed six people. More than 2 million customers were without power as of Wednesday afternoon, down from a peak of 2.7 million.

San Francisco Giants manager Bruce Bochy holds the World Series trophy as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco.

Exercise riders walk their horses during training sessions for the Breeders' Cup at Santa Anita Park in Arcadia, Calif., Wednesday, Oct. 31, 2012.

President Barack Obama is greeted by New Jersey Gov. Chris Christie upon his arrival at Atlantic City International Airport on Wednesday, Oct. 31, 2012, in Atlantic City, N.J. Obama traveled to the region to take an aerial tour of the Atlantic Coast in New Jersey in areas damaged by superstorm Sandy.