Abstract: The proceedings contain 137 papers. The topics discussed include: power outage communications: survey of needs, infrastructures and concepts; case study on risk analysis for critical systems with reliability block diagrams; the effect of age on technology acceptance among field police officers; crisis clever, a system for supporting crisis managers; dealing with information overload when using social media for emergency management: emerging solutions; 'do-it-yourself justice': considerations of social media use in a crisis situation: the case of the 2011 Vancouver riots; locating emergency responders using mobile wireless sensor networks; near real-time forensic disaster analysis; combining real and virtual volunteers through social media; emergency management: identifying problem domains in communication; and a cross impact scenario model of organizational behavior in emergencies.