Brian Fitzgibbons

That's not clear, but I would say that this type of signals intelligence has been used for quite some time.

The military and intelligence apparatus has certainly been concerned for more than a couple decades on finding devices that shouldn't be in and around their facilities.

No, Dr. Cherryland's absolutely right.

This could very well be a straw purchase.

And in this case, the actual perpetrator may have not even gone into the store.

We see that quite often.

How do we get these gun owners to figure it out?

Well, right now, as of yesterday, federal agents were canvassing the greater Tucson area with 40 photos

showing these photos and names to gun store owners to do just that, to see if they recognized any of these individuals having entered that business.

Absolutely, yeah.

There's no way that you would not, that you could escape having some kind of record of that purchase.

Well, I think what we're seeing and what we hope happens is once these CODIS results come back, that if there is anybody connected, even on the periphery, cousin of a lawn care provider to Nancy Guthrie, that law enforcement is able to quickly jump on those leads.

But what's happening now is they're running down every single high priority lead that they're getting.

Yeah, he's under an incredible amount of media and political pressure here.

And I have to say that that's the reason why.

That's a completely unorthodox thing to hear in any investigation.

Why?

Because, you know, until the investigation's complete, nobody should be ruled out, right?

We've seen it too many times where investigations change courses.

One new bit of information comes in and everything can change.