Research into the validity of alert levels in Poland does not have a long history. This is because these regimes were introduced in 2016 by the anti-terrorism law and were originally introduced in a different form under the provisions on crisis management, only from 2007. Currently, there are no published empirical results of research on the implementation of tasks in the alert grades. The purpose of the research presented in this publication was to identify and discuss the basic problem issues in the areas of the practical dimension of the functioning of alert levels. According to the author, their correct description can be a source of knowledge both in the scientific and practical dimensions, allowing expanding the area of research on the topics highlighted in this way. To achieve the assumed goal, a diagnostic research strategy was adopted, and the developed diagnosis in this subject of research is to play a discriminative and evaluative role. A combinational research approach was used in the preparation of this article. The method of analysis of literature and legal acts, as well as participant observation, were used to investigate the problem. This active observation and practical experience have been documented in observation sheets, the structured form of which allowed to obtain reliable research results supported by empirical material. During his many years of service in the Military Police, as a researcher and academic teacher in the field of security, and as an expert carrying out numerous training and audits in public facilities and critical infrastructure, the author had the opportunity to participate many times in theoretical considerations, environmental discussions, presentations and exercises in the field of task implementation anti-terrorist activities, including alert levels. The text presents several problem areas of real and critical importance for the quality of counter-terrorist tasks performed in the regimes of alert levels. The empirical results of scientific research obtained and presented in the article may constitute the starting material for conducting further research or for drawing constructive conclusions of a corrective and remedial nature.