Fellow aviation enthusiast Sir Richard Branson said Wednesday he was worried that rescuers had found no sign of his friend, adventurer Steve Fossett, who disappeared two days ago after taking off from another friend's desert ranch.
However, the billionaire president of Virgin Atlantic also was optimistic that Fossett -- whom he calls "a tough old boot" -- will surface soon.
"If he's landed and he's not too badly hurt, he's the one person in the world who will be mentally and physically equipped to get out of it," Branson said. 
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All About Steve Fossett
