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In this photo by the White House and released by Sen. Biden's office, Sen. Joe Biden, D-Del., lower right, sits on Air Force One with President Clinton en route to Bosnia on Dec. 22, 1997. Biden has lived a life of second chances, a cycle that's been cruel and redemptive by turns. Now he's starting over once again. Deeply private yet in-your-face, collegial yet ideological, the Delaware senator brings a wealth of foreign policy experience to Barack Obama's Democratic ticket, plus wisdom in the ways of Washington and an infectious enthusiasm for political donnybrooks. (AP Photo/The White House)