This chapter examines theoretically the concept of psychological debriefings as forms of intervention following exposure to traumatic stressors. It presents a critical event matrix analysis of psychological debriefings, i.e. a set of factors that can be placed into a conceptual matrix to identify the mechanisms, processes and factors germane to understanding the potential effects of debriefings and various types of intervention. A complex theoretical model of debriefings must specify the quantitative and qualitative differences between events requiring debriefings and how the nature of the traumatic event, in a sense, dictates the targeted interventions that may be required to aid those in need of assistance, either as a direct victim or as a responder. Understanding the applications and utility of conducting interventions after traumatic events will broaden the spectrum of knowledge and make informed choice possible for the greatest good for those who suffer from traumatic exposure.