"Quickly detecting living victims buried under rubble or other debris greatly increases their chances of rescue and survival. This is especially true in situations where there are multiple rubble piles or a large extent of debris. The ability to rapidly assess whether there are live victims at a particular site allows for effective allocation of search and rescue resources and helps first responders save more lives. During these types of search and rescue scenarios, responders are looking for the 'holy grail'--a tool that will allow responders to walk down a street after an earthquake or tornado, look at a leveled building, and quickly determine whether anyone alive is trapped within the rubble. The U.S. Department of Homeland Security Science and Technology Directorate (S&T), in partnership with the National Aeronautics and Space Administration's Jet Propulsion Laboratory (NASA JPL) is developing one such technology: Finding Individuals for Disaster and Emergency Response, or FINDER."
U.S. Department of Homeland Security: https://www.dhs.gov/