UNSPECIFIED LOCATION – DECEMBER 28: In this handout government image provided by ABC news, the underwear with the explosive worn by alleged bomber Umar Farouk Abdulmutallab, is all that remains of a failed attempt to down a Northwest Airlines flight over Detroit last week December 28, 2009. The alleged bomb consisted of a packet of powder sewn into the briefs of Umar Farouk Abdulmutallab, a 23-year-old Nigerian. Al Qaeda took credit Monday for the attempted bombing, boasted of its ability to overcome U.S. intelligence and airport security, and promised new attacks. Photo includes a ruler to provide scale. (Photo by ABC News via Getty Images)