Mission Accomplished For CIA's Special Bin Laden Unit

At the CIA, the hunt for Osama bin Laden had gone on since before 9/11. The agency created a special unit, called Alec Station, which focused on learning all it could about the al-Qaida leader. Yet for most of the past decade, no one could answer the basic question: Where is he? Now that the question has finally been put to rest, NPR's Rachel Martin has this look back at the special CIA unit.