He used [[PETN]], a powerful plastic explosive. A few ounces can blast open an airplane, so it is the preferred weapon of terrorists. Abdulmutallab tried to ignite a two-part concoction of PETN and possibly a glycol-based liquid explosive in a bomb concealed in his underwear. It produced a popping noise, smoke, and some fire, but no deadly detonation, because he used the wrong technique. Al-Qaeda’s branch in Yemen quickly took the credit | He used [[PETN]], a powerful plastic explosive. A few ounces can blast open an airplane, so it is the preferred weapon of terrorists. Abdulmutallab tried to ignite a two-part concoction of PETN and possibly a glycol-based liquid explosive in a bomb concealed in his underwear. It produced a popping noise, smoke, and some fire, but no deadly detonation, because he used the wrong technique. Al-Qaeda’s branch in Yemen quickly took the credit |