The purpose of the exercise was to check the condition of the warning system and to inculcate warning and assembly habits in the personnel of the civil defense units. A methodical meeting was held with the training participants. At 09:00, the exercise started with the instruction of the leader to assemble the civil defense units, and the personnel of the units gathered at the appointed place on time. The exercise checked the readiness of civil defense units with personnel, supply, communication and warning system. After the instruction of the exercise leader at 10:00 a.m. about the end of the warning and assembly exercise, the results of the exercise were analyzed and appropriate instructions were given to eliminate the detected deficiencies.