ever since 9/11 this has been a constant object of fascination for many different terror groups, from al qaeda in the arabian peninsula who were experimenting as you heard from phil mudd, with liquids and with underwear bombs to isis who managed to bring down a russian plane in the sinai peninsula with explosives placed in a soda can, and now to this more sophisticated apparently laptop threat, which as you mentioned al shabaab appeared to abuse in somalia, and it was very lucky in that case, wolf, that the plane wlags still flying at a low enough altitude that even though that bomb blew open a large hole in the wall of the fuselage, the pilot was still able to land plane. one other thing i would mention is when you look at the will remnants of what we're seeing of isis in mosul and you look at the weapons factories that they have, they are not just building crude rockets anymore, wolf. they are building high-tech