Monograph . — Izhevsk: UdSU, 2008. — 133 s. The book is logically constructed. CM. , [ concentrated presentation of the results of the study of one of the most pressing professional and psychological problems - the use of special psychological knowledge in assessing the behavior of an employee of the internal affairs department - a participant in a counterterrorist operation in emotionally stressful , Conflict situations of professional activity , [CM ) the Office of Investigations [ DT [DT [ The paper defines the nature and consequences of the impact of extreme individual combat professional experience on the personality, behavior and mental state of an employee of the Internal Affairs Service - a participant in a counter-terrorist operation. Organizational and methodological recommendations for the appointment and production of psychological expertise of post-traumatic stress states in the practice of psychological support in the field of administrative and service activities . The monograph is of interest to law enforcement officials, Teachers of Psychology of Educational Institutions , Practical psychologists of law enforcement agencies , staff of departments for work with personnel involved in the implementation of psychological support programs