Provisioning for a Distributed ATM Security Management: The GAMMA Approach Figure 8. Validation scenario of SMP prototype. There is a clear need established for new or adaptation of procedures in ATM concerning the interaction between security and operational actors in particular. These procedures will help ATM stakeholders and nontraditional stakeholders like security operation centers to enhance their performance when facing security incidents. What is also considered by the GAMMA project is the need for development of a concept and the establishment of a context that recognize national sovereignty and responsibility for ATM security. Therefore, a proper cross-border and regional coordination without infringing the national security requirements needs to be postulated and established. This includes the requirement that 20 implies actions and information exchanges that do not have to intervene with national policies. In conclusion, the GAMMA project and its results contribute significantly towards the evolvement in managing security in the future ATM. GAMMA provided the incentives that its achievements can be used in the deployment phase currently pursued by SESAR and NextGen. ACKNOWLEDGMENT Work towards this article has partially been funded by the Commission of the European Union, Collaborative FP7 GAMMA Proj- IEEE A&E SYSTEMS MAGAZINE NOVEMBER 2017