Page 10 - Ab Block News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> coming to the end of a block. >> reporter: we are not showing the investigators' faces but their point of view is eye opening. they begin at the very spot where matt and swed cut holes in their cells, then follow the same six story high catwalk before jumping down to take on an elaborate maze of pipes and the prison's tunnel system. >> approaching the first significantly tight squeeze. the end of b block leading into the c block area. >> reporter: about halfway through the tape. >> currently about nine, almost ten minutes in. >> reporter: our first glimpse of the hole that takes them from o...

Between buildings. >> we are now just exited the block area and enter into the pipe chase tunnels adjacent to b block and c block. >> reporter: it's a maze that even these investigators have trouble mastering. there is piping hot steam. at times, it's hard to breathe. >> we are basically southbound from that tunnel. >> reporter: about 17 minutes in, they reach the now legendary steam pipe used by the escapees. this is where it gets tricky. sweat had told investigators he spent nearly a month cutting holes in this steam pipe. all part of his secret nightly trips spent mapping out their elaborat...

One prison building to the next. investigators squeeze themselves through it to reach the other side. >> watch your legs. >> reporter: they push forward, retracing the prisoners' steps. and just like them, dealing with unbearable heat. >> it's getting warm. >> reporter: at 14 minutes, they are underneath the asphalt yard between buildings. >> now just exited the block area and entered into the pipe chase tunnels adjacent to b block and c block. >> reporter: it's a maze that even these investigators have trouble mastering. there is piping hot steam and at times it's hard to breathe. >> basicall...

Elaborate maze of pipes and tunnel system. >> approaching the first significantly tight squeeze, the end of b block leading into the c-block area. >> reporter: about halfway through the tape -- >> almost nine, almost ten minutes in. >> reporter: our first glimpse of the hole that takes them from one prison building to the next. investigators squeeze themselves through it to reach the other side. they push forward, retracing the prisoners' steps, and just like them, dealing with unbearable heat. >> getting warm. >> reporter: at 14 minutes, they're underneath the asphalt yard between the buildin...

Beast rape stuff and all that. you can put it -- you can do it in the b block. it's becoming increasingly clear that white house is still facing a tough sell on the iran nuclear deal after secretary of state john kerry appeared on capitol hill for the second time in less than a week. appearing with the energy and treasury secretaries kerry warned of grave consequences if congress does not support the deal. >> i don't know how i go out to another country if that happens and say, hey, you ought to negotiate to us or talk to us about any issue whatever it is with the reliance that we can actually...