and plant listening devices, delsar devices, inside the rubble pile to be able to see if they can get any feedback from that. tapping sounds, moaning sounds, somebody trying to get attention. anything that's going on. a callout will be done, also. an all quiet will be done and some of the rescuers will do a callout. the lifting of those pieces of concrete that everybody's watching are the -- either, done by humans and/or mechanical machines are trying to gain access underneath. the rescuers will, then, put the pieces of wood, which we call cribbing and shoring, those areas so that they stay elevated. and that allows a rescuer or, at this time, a canine, a search canine that is very well-trained and sophisticated into that area to try and do a live find. that's what they are trained for. going in those find areas. if they do have a hit on a possible victim that may be trapped, still, inside and alive. it will be followed up by the technical-search teams. they will be inserting search