Walking off the fat

Steve Vaught is big and broad and 40. He didn't want to die at 50, so he's striding across the United States.

This week, his 13th on the road, has been the hardest thus far for Steve Vaught, a 400-pound man trying to walk across America.
On Sunday morning, he found a creek just as the desert heat forced a midday break. But when he woke from a nap and tried to fill his water bottles, the stream had already gone dry.