San Francisco and the Bay Area face a 62 percent chance of a large earthquake in the next 30 years. To prepare, San Francisco’s Department of Emergency Management (DEM) reviewed its disaster preparedness and recovery strategies. Rob Dudgeon, Deputy Director of DEM, realized that his agency needed to communicate with the public in a new way. Working with Alicia Johnson, DEM’s Resilience and Recovery Manager, San Francisco DEM hired IDEO, a design and innovation consultancy, to develop a new preparedness platform called SF72. Seventy-two represents the number of hours following a major emergency when people should be able to take care of themselves before help arrives. The website SF72.org, as well as outreach programs including presentations and in-person meetings, helped create a new culture of “positive preparedness” for residents, organizations, and businesses. Positive preparedness aims to show community members how to tap into their existing networks, using tools they already have to support each other after an emergency. SF72 encourages resilient behavior by providing a platform for people to connect.