CNN CNN Newsroom February 20, 2014 14:05:00
Is working on this design and what it is? >> well, the threat from dhs is nonspecific, but the group that has experimented with all sorts of interesting designs for bombs that are hard to detect by conventional means is al qaeda in the arabian peninsula. they built the underwear bomb that failed to detonate on christmas day 2009. they built the bombs hidden in printer cartridges and cargo planes bound for the u.s. luckily discovered in october 2010. and they have a very experienced bombmaker called al asiri who has never been found and is still believed to be out there. may be training other p...