Down Paddock News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> reporter: sheehan believes if paddock escaped, it wouldn't have been for very long. >> there's one of three ways it's going to end for an active shooter. you either commit suicide, die in a hail of gunfire with the police, you're going to shoot it out with them and you're going to be killed or you're going to continue on a preplanned rampage at locations b, c, d and e until the police finally stop you. >> reporter: so you don't mean escape meant escape for good? >> how could it? he rented the room in his own name. he's already on video coming in and out. we know who he is. he's going to be ...

From the gunman's and got inside information about his planning from a former s.w.a.t. team member. stephen paddock's horrific attack on the route 91 country music festival was a very meticulously planned assault. >> he spent decades acquiring ammo and weapons and living a secret life. >> reporter: that planning, experts say, began with a sniper's nest that he chose at the mandalay bay and the targets below. k from the room, you can see paddock's broken hotel window, his line of sight to the concert venue. >> this is my first time being up here and looking at this and to me it's very erie. >> ...

Behind this curtain, one of the two windows that paddock shattered for two different firing positions. in addition to the concert, paddock may have had a second target. the las vegas review journal reporting that he fired at two jet fuel tanks roughly 1,000 feet past the concert goers, hitting one tank but not causing a potentially massive explosion. as investigators tried to nail down paddock's motive, they are learning more about what he did before the attack. he rented a condo in this building the weekend of september 22nd with views of the life is beautiful music festival. and according to...

Approxima32nd floor. >> reporter: even though paddock stopped firing on the crowd, he's convinced paddock didn't immediately kill himself. instead, he focused on escaping. >> he was doing everything possible to figure out how to escape at that point. his concern was personal concern versus what was occurring down below him. >> reporter: paddock had an even more sophisticated system than first thought to alert him to anyone approaching. two surveillance cameras on this room service cart along with another rigged in the main door's peephole as well as a baby monitor inside the room. he barricade...