this has been very tough for them, too. they have a lot of challenges trying to find survivor trapped into the rubble, talking about chemicals, downed power lines, the fact that the elements are picking up at sometimes. now it's fine. but it's been very tough for them. they were encouraging each other, saying, hang in there, rely on each other, let's get through this, do what we're here for and find people who could be alive but are trapped, as we speak. >> to remind people here, standing on a carpet, what used to be a bowling alley, a helicopter from the national guard, doing overhead survey so you know what you're hearing. this is a bowling alley. steel reinforced, massive beams, all twisted. they have to make their way through this in order to do search, yes? >> it was incredible watching them earlier today with the cadaver dogs running throughout here and the teams really, you have a tough situation because this is heavy material. we're talking about steel girder right behind you.