On May 2, 2011, teams of U.S. Navy SEAL s landed in and around a compound in Abbottabad, deep inside Pakistan. Their mission that morning was to capture or kill the world's most wanted terrorist, Osama bin Laden. The mission was codenamed Operation Neptune Spear, the result of more than a decade of dedicated intelligence gathering. It would lead to his final demise, a burial at sea and the end of an era. But the hunt for bin Laden began long before the Sept. 11, 2001, terror attacks that made