right now we're going to bring in former new york police captain peter moreno for insight. the operations for risk and assault. and captain, thank you for being here. good news so far on the ground, they've been able to disarm the trip wires that were set up inside there in that apartment, but still a very dangerous situation. i want you to give us an idea exactly what sort of hazards that the folks on the ground there face and how difficult it's going to be to get in there without causing more lives to be -- more people to be killed, quite frankly, and to preserve what's inside of that apartment as well, to find out where this guy -- find out more about who this guy is and what his intent is, possibly. >> absolutely. i think the preservation of evidence is really key, not just as i said for the immediacy of the situation, but for any future harm he may have intended and so, whatever evidence is in there may have clues that would lead investigators to, perhaps a n on site location where they would be secured. >> there's so much more in there. i understand that there are abo

peter moreno is a former new york city captain and explosives expert with the new york city. >> thank you. >> you're quite welcome. >> one of biggest concerns for investigators in colorado to find a safe way to get inside the booby trapped apartment. we're told that bomb detectives have successfully disarmed the trip wires and they're go to get into that apartment, but their investigation is not over. mike tobin is live with the very latest, mike? >> and jon, a lot of what the police are going to be able to look at is the purchasing, the physical planning that this guy went through at least two months ahead of the attack. and he got on the internet, in a massive arsenal. 3000, 223 bullets that he was carrying, another caliber bullet that would correspond with the the two glock side arms that they had. one was on his possession at the time and one the police chief believes he said was inside the vehicle out in the parking lot and also purchased on the internet. some300 .12 gain shotguns. all were bought legally and locally and all the background checks would have turned up as a simple