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One of the things i'm hearing from guys now, yes, they look like bombs. yes, there is a mode of sophistication, but it doesn't mean they are functional bombs or just meant to look like functional bombs, help me understand that. >> there's four component parts of a bomb. power supply, which is generally a battery. an initiator, which is a blasting cap, explosives. could be c 4. and a switch. a switch that was used in austin was a trip wire. it can be a key or cell phone. >> why is this the most important to you guys? >> from the bomb techs i've been talking, to it needs a level of sophisticatio...

There was a bomb there. >> let's put up the x-ray images of them. here they are. what does it tell you when you look at this. >> first of all, the package, right, so the packaging there. pvc pipe. there's two types of casing for this. one is pvc pipe, stuffed with nails or nuts or bolts or use a cast iron pipe. the package becomes a shrapnel. four components. a power supply, typically a battery, initiator, typically a blasting cap, the shrapnel, the things stuffed inside of it and fourth would be the switch. was it electrical fuse, a trip wire or was it possibly a key fob or cell phone somebod...

Here. there will be digit counsel -- exhaust. law enforcement professionals will be able to put together. >> especially the ones hand delivered by courier. i have to ask you, the question people have been asking me, they didn't go off. they didn't go off. was this intended to scare people or do you think the actual intent was to harm someone? >> it doesn't matter when you're investigating i'm sure. >> we're assuming this is terrorism. the purpose of terrorism is to do what? it's violence or intimidation to stoke fear for political or social gain. the fact that they didn't go off, one of two th...

The package, that's not necessarily a direction to tell you who was involved. while we're talking, please put back up the images of what we got today, the new images of the bombs on the inside fp if on the inside of the bomb you see things. one of the things i'm hearing from guys now, yes, they look like bombs. yes, there is a mode of sophistication, but it doesn't mean they are functional bombs or just meant to look like functional bombs, help me understand that. >> there's four component parts of a bomb. power supply, which is generally a battery. an initiator, which is a blasting cap, explo...

One reported by the "new york post" today, they said there was no blasting cap in that. i'm wondering whether any other ones that potentially could have detonated? you do you know, dan? >> that's the key question. obviously, brian, the key component of an explosive device is an explosive. if you don't have black powder, you don't have an explosive. the use of pvc, you know, again, speaks to just such an amateurish approach, this has to be intentionally amateurish. it doesn't make any sense. ainsley: dan, how long do you think it will take before they are able to determine who sent these. rick ...