Hurricane Dorian bears down on Bahamas with 160 mph winds as islands hunker down, 'taking no chances'

A menacing Hurricane Dorian took aim at the northern Bahamas early Sunday, strengthening to a "catastrophic" Category 5 storm packing winds of 160 mph and the threat of torrential rain that could last for days as millions in the U.S. along the Southeast coast from Florida to North Carolina are keeping an eye on where the storm may head next.