The chapter addresses the question of how crisis and emergency communicators in the justice (police) and health sector in Norway reflect on their use – or lack of use – of social media during the terror crisis on 22 July 2011. We examine how these communicators in the years following the crisis have developed their use of social media to optimise their and the public’s awareness of similar crises. Our semi-structured interviews with key emergency managers and responders display how the terrorist-induced crisis in 2011 was a wake-up call for communicators in the police and the health sector. They reflect on the significance, strengths and weaknesses of social media in the management of crises such as this one. Book edited by Harald Hornmoen and Klas Backholm