## 4 Lessons Learned and Discussion  
The conduct of the exercise is analyzed for the two macro-areas of experimentation (activation management and emergency aerophotogrammetry) in terms of strengths, weaknesses, opportunities and threats. One of the primary focuses of the exercise was to test the chain for the request of support, the procedures for the activation of the no-fly zone (NFZ) as well as the activation and management of the activities of the so-called \"external bodies\" (i.e., not belonging to the national fire brigades--CNVF). The basic strength was the coordination system chain itself, which allowed an effective liaison between the aspects of activation and management/coordination of the operations conducted by the \"external bodies\". The establishment of a joint operational headquarters shared by the local coordination center of overall air operations (Mantua) and the technical coordination center of the external UAS Networks (UAS CCT) was a crucial aspect that fostered the necessary interaction and the optimal real-time exchange of information, avoiding any otherwise physiological delay in the operations. It helped to strength the synergy between the teams (CNVF and UAS CCT networks), which were able to jointly optimize the procedures in compliance with their respective needs, including formal ones. The exercise gave also the opportunity for discussing procedural aspects with the national aviation authorities (ENAC/ENAV/D-flight), opening a dialogue which is essential to keep active and operational. Given that the procedure was established for the first time on an experimental basis, it is certainly possible to optimize aspects above all in the communication flows and in the forms of the exchange of information. Regarding the conduct of joint technical activities, we focused more on the activation aspects, on the procedures of data acquisition and interference management and on the aspects of conducting a joint activity by teams belonging to different institutions. Common procedures and definition of parameters in data acquisition led to a consistent and effective dataset as requested for multicrew operations. A unique data processing environment could provide operative outcomes as hi-res ortho-images and 3D models. Other key aspects touched upon during the exercise, although not as a priority, were the feasibility assessment of the required operations and the delivery of the final products. An excellent synergy among the different teams developed in terms of cooperation between institutions, common language and approach to problem solving. Each team understood the tasks assigned and, therefore, aware of operating within a more complex system, operated accordingly to guarantee the necessary safety conditions and to achieve the results within a common plan. The assignment of tasks, which involved the definition of a coordinator for each transversal activity (e.g., radio communication, data processing,  
Figure 12: Point cloud (about 162 mln of points) obtained from the survey of Team 5 during EXE3. etc.) proved useful and functional for the conduct of the assigned activities. Team building, in this sense, is also important to make operational future real deployments. Repeating the same assignment with different strategies allowed for the evaluation of the effectiveness of the different approaches in relation to the operational context and fostered the exchange of experiences among the different experts in the field. Great attention was paid to the safety of operations, often by means of redundancy strategies; however, from the safety point of view, the interference with manned flights without transponders is a highly critical element to pay attention to since the no-fly zone (NFZ) on the D-flight portal is generally checked only by UAS operators.