The Marines, the Coast Guard, civilian crews and volunteers used helicopters, boats and heavy-duty vehicles Saturday to rescue hundreds of people trapped by Florence’s shoreline onslaught, even as North Carolina braced for what could be the next stage of the disaster: widespread, catastrophic flooding inland.

 Efforts to rescue a woman struggling in the ocean off Georgia’s coast turned tragic after a man trying to help the swimmer was swept underwater and drowned, police said Monday.