This chapter outlines an approach for evaluating communicated threats for violence potential. A communicated threat for any organization is quickly characterized as a concern. Communicated threats can be expressed in a variety of modalities by anonymous or known authors. A communicated threat may be written in the form of a letter or electronic mail message. Individuals who communicate threats may be providing advance warning of action they plan to take. In any form a communicated threat requires a structural framework to assess both the level of risk and the risk control actions that need to be considered. The threat analysis model, which assesses a communication based on organization, fixation, focus, action imperative, and time imperative, is designed to be used in conjunction with the threat assessment model. Threat assessments and potential risk control actions are often based exclusively upon a review of the materials.