Friday's drone strike in Yemen eliminated two Americans who have played a key role in the development of al-Qaida in the Arabian Peninsula. Anwar al-Awlaki and Samir Khan were, above all else, the group's bridge to the West. The group is largely made up of Yemenis and Saudis who have hardly stepped foot out of the Middle East. That made Awlaki and Khan unique. Host Audie Cornish talks with NPR's Dina Temple-Raston.