Fig. 4From: A remotely piloted aircraft system in major incident management: concept and pilot, feasibility studyAirview of narrow canyon. A narrow canyon with steep rock faces and snowdrifts hanging over the edge was chosen as the location for a mountain rescue scenario. Note the big hole in the snow at the bottom of the canyon with running water beneath, not visible from the edge. Photo shot from inside a manned helicopter (EC 135). (Photo: HÃ¥kon B. Abrahamsen)Back to article page