JOHN ZARRELLA, CNN CORRESPONDENT: And all of a sudden, boom, these urgents move on the wire: Mexico City earthquake.</s>STEVE SONNENBLICK, CNN CORRESPONDENT: It's difficult for people to understand the magnitude of an earthquake until they actually see it. It's just absolutely amazing. I find it very difficult to describe some of these things, because I don't believe that I have the vocabulary to tell the pictures as I see it in my mind. I had stake out duty at night at the Juarez Hospital.</s>ZARRELLA: This hospital had collapsed upon itself, floor on top of floor. And night after night, day after day, they would be sitting there with hundreds of people trying to pull out the debris, listening for survivors. They had dog teams that were there searching through the rubble.</s>SONNENBLICK: When they actually brought out a victim that had been trapped in there that was in fact alive, that lived three or four days in that hellhole, that to me I think was the what I -- why I was there, what I was doing there. I got a glimpse of the person and you could see the life in their eye and you knew that everything was going to be OK at that point in time.
CNN Remembers Earthquakes in Mexico City