GEORGE TOWN, Cayman Islands (AP) -- Gustav became a hurricane again on Friday as it plowed toward Cayman Islands resorts, the start of a buildup that could take it to the U.S. Gulf Coast as a fearsome Category-3 storm three years after Hurricane Katrina.

Gustav, which killed 71 people in the Caribbean, was expected to swirl through the Cayman Islands, a tiny offshore tax haven studded with resorts and cruise-ship souvenir shops, before crossing Cuba's cigar country and heading into the Gulf of Mexico by Sunday.

Well-heeled tourists fled Cayman hotels by air, while Katrina victims in Mississippi still living in emergency cottages and trailers were told to evacuate beginning this weekend.

Hotels on the Cayman Islands asked guests to leave, then after the airport closed prepared to shelter those who remained. Chris Smith, of Frederick, Maryland, said his hotel handed out wrist bands marked with guests' names and room numbers so that "if something happens they can quickly identify us."

"That was a little bit sobering," he said, standing outside the hotel with his luggage.