Online Extremists Recommended Methods Exactly Like Those Used by Abdulmutallab

ABC News "A private Israeli intelligence company told ABC News Monday there was a surge of online discussions in extremist Islamic forums about blowing up planes three weeks before Umar Farouk Abdulmutallab's attempt to bring down Northwest Flight 253. The discussions recommended using "improvised detonation chain" devices, exactly like the one used onboard the Detroit-bound flight."