John McCain was captured and held prisoner by the North Vietnamese for 5 1/2 years after being shot down by a missile over Hanoi. The Senator opens up about his imprisonment: | National Geographic TV

This is John McCain's concession speech in 2008, after he lost the presidency to Barack Obama. He congratulated Obama, and motioned for his supporters to stop booing. “His success alone commands my respect for his ability and perseverance," McCain said. “And that he managed to do so, by inspiring hopes of so many millions of Americans who had once wrongly believed that they had little at stake or little influence in the election of an American president, is something I deeply admire and commend