Faced with increasingly numerous, complex and non-standard crises, putting the populations under hazardous situations and vital issues, public and private organizations face a major challenge: "How to optimize decision-making under uncertainty and how to anticipate the reconstruction and restoration of a territory?” On the basis of the last cyclonic season in the Caribbean, the APRIL project will put into perspective the impact of hot decisions, based on evolving and partial knowledge, on the maintenance of the resilience of the territory in the short term (“urgency resilience”) and the medium term (“territory recovery”). Particular emphasis will be placed on anticipation and decision making under uncertainties related to meteorological forecasts, socio-economic dimensions of the territory (vital networks, insurance context, legal, economic context, precarious populations, insularity, etc.). All levels of the ORSEC plan will be considered from the town to the interministerial level. APRIL will pursue two major goals: - Capitalize the experience of IRMA, MARIA and JOSE on the basis of surveys to provide practical recommendations and methodologies to implement a short-term (emergency) and medium / long-term (reconstruction of territory) for future extraordinary events and improve ORSEC planning; - Create decision support tools (Decision support system and representation of decision parameters via heuristic mapping) that assess the various components of a territory's vulnerability, uncertainties and anticipate cross-cutting protection and remediation measures to maximize the short- and medium-term resilience of the territory. Beyond its "research and development" components, APRIL proposes to implement, as soon as the project is implemented, a transfer of results to civil security and crisis management actors. A table exercice of the current staff will be organized at the end of the project and will notably enable to test the proposed anticipation method. More generally, the results of the APRIL project will be widely disseminated to the various training institutions of the State's executives and made available to the public authorities through the advisory committee made up of professionals from civil security and crisis management. This committee will ensure that the research conducted in the APRIL project responds to operational issues and finds an echo in the implementation of concrete measures and the evolution of doctrines. APRIL is a research-action project and is positioned as such in a framework of experimental development.