the collapse structure scenting and they smell survivors, in simple terms, and tell you where the best chance of a scent is. there are also human remains dogs, which will probably be late on in the excavation of this collapse, but they will also have to use seismic and acoustic listening, different types of cameras and also a little bit of piecing together which bit of the building was where and who was there at the time. so multiple lines of search and investigation take place, and sometimes they have to stop want to do the other end again, if you werejust stop want to do the other end again, if you were just trying to put a dog over a space or listen to it, it didn t back a new kind of have to get everyone off because it is so sensitive it will hear boots on the ground or anything like that, so it can appear slow, it can appear like people, a way i could not go back in, but in many ways that is the quickest way to hone in on the survivors viability. fiend quickest way to hone in on