Families are complicated systems that continually evolve. The structure of the family system can change due to circumstances that occur within the family or in a social environment. When a family is exposed to a traumatic event, whether it is a spouse returning home from war or a tragedy within the community, each family member is affected. The more members in the family system, the more factors the clinical social worker has to take into account. Finding an intervention that meets the needs of the individual members and the family as a whole can be challenging. No one intervention will fit all families. It is crucial that the intervention is appropriate for that particular family and that it addresses their specific issues.