AQAP
Umar Farouk Abdulmutallab
Al Qaeda in the Arabian Peninsula, or AQAP, claimed responsibility for the Northwest Airlines attack and for radicalizing Abdulmutallab, seen here in a photo released by the group.AQAPUmar Farouk Abdulmutallab
This image, exclusive to ABC News, shows Abdulmutallab's alleged weapon of choice: underwear, with a packet of the high-explosive PETN sewn into the crotch.
Paul Morigi/WireImage
Caters News Agency
Sammy Dallal/For The Washington Post/Getty Images
Butler County Sheriffs Office/Facebook
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