Abstract: Continuity of Operations (COOP) planning helps ensure that municipal agencies maintain essential functions when disasters threaten critical infrastructures. COOP planning is especially important for Public-Safety Answering Points (PSAPs), which must continue to answer 911 calls and dispatch first responders during crises. However, COOP planning guidelines often focus on threats to cyber-physical infrastructures rather than outbreaks of infectious disease that threaten the human work arrangements—social infrastructures—agencies rely on to perform essential functions. This study reports preliminary findings from interviews with U.S. PSAP officials who developed plans to decentralize 911 facilities, networks, and personnel to maintain essential functions during the COVID-19 pandemic. These findings suggest revisions to COOP planning guidelines that consider requirements for redundant, diverse, and interdependent cyber-physical-social infrastructures.