The main purpose of ASSISTANCE project is twofold: On the one hand to help and protect different kind of first responders’ (FR) organizations that work together taking into account the type of disaster/crisis they are mitigating in each moment and on the other hand, to enhance their capabilities for facing complex situations providing them advanced training based on Virtual Reality (VR), Mixed Reality (MR) and Augmented Reality (AR), tailored to their real needs depending on the type of incident. ASSISTANCE project will use novel technologies such as; UAV, Robots, drones’ swarms and advanced training based on VR, MR and AR for increasing the FR’s situation awareness (SA) taking into account their need in terms of data (e.g. real time video, persons and objects location, evacuation routes status, ad-hoc network coverage and so on). Different types of adapted SA modules will be developed inside a common SA framework capable of offering the sensor outcome needed by each FR organization (e.g. real time video and resources location for firemen, evacuation routes status for emergency health services and so on). Regarding training, an advanced training network based on VR, MR, AR and other novel technologies and methodologies (e.g. tailored curricula, immersive interfaces, adapted training methodology definition, etc.) will be established in order to share different VR platforms and scenarios for enhancing the current training capabilities and skills of different FRs organization. All the ASSISTANCE results will be tested under controlled conditions in three different demostration pilots. Solutions will be developed in compliance with EU societal values, fundamental rights and applicable legislation, including in the area of privacy and personal data protection. Societal aspects (e.g. perception of security, possible effects of technological solutions on societal resilience, gender diversity) have to be taken into account in a comprehensive and thorough manner.