out week -- a week after a collapse? >> absolutely. i was the team leader in haiti. and we rescued, as you heard earlier, a -- a -- a small child eight days after the earthquake. so, that's why these rescuers continue to have hope. if void spaces can be detected, there is the possibility that people are still alive. we're not outside the window of sur survivability in this type of collapse. a pancake collapse is -- is one of the worst types of collapses you could have. as you said, the lean to where, perhaps, maybe one wall pushes out and you have the floor drop down. or a v-type collapse where it collapses in the center. gives you much more void space. these type of pancake collapses, still, could be supported by furniture in a residence, refrigerators, air-conditioning units, beds. anything, like that, could have created a void space that allows