U.S. Department of Veterans Affairs, National Center for PTSD. (2018). Reactions Following Disaster and Mass Violence.
This resource discusses how the impact of disaster and mass violence is often widespread, with many people who directly experience the event and many more who witness or are indirectly affected by it. It details responses and interventions for the post-event period, which can be divided into four phases: impact, immediate, intermediate, and long-term.