Iraq; David Martin; Andrew Ross Sorkin; Dwayne Johnson

Correspondents John F. Burns and Jon Lee Anderson report from Iraq on the recent deaths of U.S. soldiers and contractors. CBS News correspondent David Martin reports on how the Pentagon will respond to the ambush of four American contractors who were mutilated and paraded through the streets of Fallujah. Journalist Andrew Ross Sorkin discusses the mistrial of Dennis Kozlowski, C.E.O. of Tyco, which was caused by outside pressure on a member of the jury. Dwayne "The Rock" Johnson talks about his wrestling career, getting bitten by the acting bug, and his latest movie, "Walking Tall."