What empowers emergency rescue? What is the geographic spread of emergency response? Drawing upon a year of ethnographic fieldwork with emergency medical technicians (EMTs) in the classroom, this research project used design research to analyze and represent the social and spatial spans of emergency rescue. Theorizing habits and habitus as what underlies an EMT’s ability to respond to health emergencies and care for patients, these diagrams trace the contours of such habits and habitus. The above information graphic describes the flow of power through social and political organizations that license’s EMT’s scope of practice; the below maps highlight the geographic distribution and reach of EMT bases and hospitals in Boston where I conducted my fieldwork.