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Last year that caused him to start stockpiling weapons. he bought 33 guns in the last 12 months. investigators tonight examining that arsenal as well as his cell phone records and computers and they are following the money trail, tracing thousands of dollars he recently spent on casino chips and that he overseas. paddock had no known financial problems or criminal history. tonight, the search for motive, amid growing frustration here in vegas. >> brian: let's bring in brian russell. that's what we know. what do you think? >> when we look at how meticulously this guy did everything else, relate...

I believe in his gut that he understands the complexity of this type of attack and the amount of planning. jet fuel tanks, not that far away. if those tanks had gone off, the amount of destruction that would have been caused by not only have made it that much harder for that guy to have been pinned down by that security guard but potentially every single person in that crowd or major chunk or large chunk of that crowd could have been killed. i am hanging on by a thread. i agree with jim, we don't want to put the cart in front of the horse. there's too many guards. i'm not saying security wasn'...