a threat anymore. u.s. counterterrorism official says the explosive device is similar to the one that was used by the so-called underwear bomber back on christmas day of 2009. only this time, more sophisticated and harder to detect. barbara starr is live at the pentagon this morning. what do we know about the bomb itself and about how this all unfolded? well, very little detail being made public at this point, ashleigh because officials say operations intelligence operations are still ongoing. clearly, pointing to the fact they still feel there are elements of whatever this organization is that was behind this throughout. and they believe it is al qaeda in yemen known as aqap. al qaeda in the arabian peninsula. as for the bomb itself, all the indications are that it was very similar. as you said, to devices used by aqap in both the christmas day underwear bomber and another plot after that to put bombs inside printer cartridges and put them on aircraft bound for the united