It is becoming increasingly common for psychiatrists to be among the first responders when disaster strikes. More than 800 psychiatrists are believed to have responded to the 9/11 attacks. The first clinical manual on the best practices for helping those affected by disaster. An explicit and practical discussion of the evidence base for recommendations for psychiatric evaluation and interventions for disaster survivors. Disaster is defined by the World Health Organization as a severe disruption, ecological and psychosocial, that greatly exceeds a community's capacity to cope. This manual takes an "all-hazards" approach to disasters and has application to natural occurrences such as earthquakes and hurricanes; accidental technological events such as airplane crashes; and willful human acts such as terrorism. The field of disaster psychiatry is more important than ever, in response to disasters such as the Deepwater Horizon oil spill in the Gulf of Mexico and the 2010 earthquake in Haiti. Today, disaster psychiatry encompasses a wide spectrum of clinical interests, ranging from public health preparations and early psychological interventions to psychiatric consultation to surgical units and psychotherapeutic interventions to alleviate stress in children and families after school shootings, hurricanes, or civil conflict.