The essence of the subject are extraordinary situations in the whole spectrum of its manifestations and characteristics and their effect on humans, including a number of risk factors influencing behavior, reaction and internal experience in stressful conditions. This includes the effects of other side effects on the human body and health, the ability to quickly make adequate decisions and assess the situation and analysis of all surrounding socio-psychological influences and manifestations (aggression, anxiety, fear, stress, PTSD, individual and group behavior). Part of the behavior and influencing of all social systems is also crisis communication and crisis intervention and evaluation of its consequences and effects.