This chapter categorizes events as family traumas; school and organizational traumas; community traumas; disasters; war and terrorism; unexpected events; and other potentially traumatic events. School and organizational trauma includes death or suicide, bullying and disasters occurring in these domains. The incidence of trauma in the United States is high, with about 70% of adults having experienced a traumatic event at least once in their lives, and up to 20% of those developing post-traumatic stress disorder. The magnitude of other potentially traumatic events is in itself overwhelming: Rape and sexual abuse/assault, physical assault, community and school violence, industrial accidents, car accidents, fires, natural disasters, plane/train crashes, sudden deaths. Family trauma is complicated by the fact that those who should provide safety and protection are the perpetrators. It is also generally a chronic issue rather than a one-off occurrence, and repeated traumatic events have been found to have a more harmful and enduring impact.