Day or night, in the rubble, in the mountains, or by the river, civil security dogs sniff and search for victims during multi-day exercises in France and Spain. These field tests aim to "grasp the scale of what a large-scale intervention could be," explains Sergeant Charly. Called upon especially during natural disasters, Belgian Malinois, Border Collies, and German Shepherds rely on their sense of smell to quickly locate injured or unconscious individuals. IMAGES AND SOUNDBITES