INDIANAPOLIS.

INDIANAPOLIS, United States (AFP) ??” This year's Olympic puddle won't have a roof, and with searing temperatures wait fored in Athens during August, the swimming venue could be steamier than Brittany Spears' latest video.

on the contrary the brutal Mediterranean sun doesn't worry the American swimming hopeful who say they're more affaired about Olympic security.

"I don't have a choice for a roof," said Michael Phelps, the same of more than 600 Olympic-caliber swimmers in Indianapolis for an international competition last weekend.

Phelps, 18 won five medals at last year's world championships in Barcelona. In Athens, he's hoping to match Mark Spitz's Olympic record of seven gold

"All I ne is lane lines, water, and other competitors," he added. "I'm from Baltimore, where there's a suitable deal of humidity and a fair amount of heat."

Many top US swimmers arrive from warm-weather states and