Leaders of al Qaeda in Yemen claim that they
studied airline security in the U.S. and overseas carefully before
designing the bomb that Umar Abdulmutallab carried with him on
Christmas Day.
In a new publication, according to a
translation prepared by terrorism analyst Evan Kohlmann's translators,
the group claims it studied x-ray machines, metal detectors, and
explosive trace sniffers in considering how to prepare the bomb.
