A close-up of a receiver used outside a building to test a new firefighting tracking technology. (Paul Wedig/DHS-Science and Technology Directorate.)
Home A close-up of a receiver used outside a building to test a new firefighting tracking technology. (Paul Wedig/DHS-Science and Technology Directorate.) A close-up of a receiver used outside a building to test a new firefighting tracking technology. (Paul Wedig/DHS-Science and Technology Directorate.)