This chapter explores how the concept of sociotechnical imaginaries can be used to examine civil defence as remembered. In focus stand oral histories testifying to the entanglement of civil defence in everyday life. The chapter employs a historical ethnography approach, using interviews and questionnaires collected between 2006 and 2012 in Sweden and the UK. The analysis, which departs from the three themes of localities, temporalities and mediations, illustrates the value of a more ‘bottom-up’ approach and discusses how we may refine the sociotechnical imaginaries framework to incorporate at least some elements of the ‘fuzziness’ of everyday life. It shows how elements of everyday culture relate to processes of embedding, resistance and extension of civil defence in Sweden, the UK and beyond.