Chertoff warns of hurricane risk

Homeland Security Secretary Michael Chertoff warned that the nation's largest city needed to be prepared for a hurricane powerful enough to cause serious flooding in Lower Manhattan and elsewhere in the city.

"It's always a little odd being in New York and talking about hurricanes," Chertoff said after touring a new command center at the Office of Emergency Management in Brooklyn.

The city typically experiences a hurricane about every 90 years.

The last major one, in 1938, killed 700 along the Eastern Seaboard.