Detailed text transcripts for TV channel - CNN - 20170921:06:03:00
Then a whistle cuts through the air and everyone stops. total silence. this gives rescue teams crawling through the collapsed structure the chance to listen for survivors. [ whispering ] the work inside the building is treacherous. wooden pillars have been brought in to fortify what's left of the school. hector mendez is part of a volunteer brigade of rescue workers known as the moles. his team arrived an hour after the school collapsed and the 70-year-old believes more people will be pulled out alive. do you think you'll find children alive in there? >> yeah, the children, they got -- [ inaud...