U.S. intelligence officials believe al-Qaida will have a hard time recovering from the death of its leader, Osama bin Laden. But some experts believe bin Laden was just a symbol and that the greatest terrorist threat to the U.S. is al-Qaida in Yemen. Here with more on how we found Bin Laden and what this means for the U.S. government is AP national security correspondent Sagar Meghani.