In the span of more than 40 years with ABC News, Peter Jennings has built one of the most respected reputations in television journalism. Recently, Jennings anchored "World News Tonight" from Iraq. He returned to the States, only to hit the road again. Tomorrow and Thursday "World News Tonight" reports from Seattle, where Jennings and his team will examine our region's industries. "One of the great frustrations common to people like me ... is not getting out enough," he said in a phone interview, calling his Iraq tour some of the happiest days he's had in his life. Having spent...