Moscow city. Residents of the city on the street read the decrees and decisions of the headquarters of the Civil Defense. Workers at the machines in the shop of one of the factories. At the signal of the siren, the workers put on bags with gas masks. Passers-by with gas-mask bags over their shoulders during an air raid. The movement of road and city transport. The duty officers of the post of protection of public order distribute chemical protection equipment. Fighters of the anti-chemical protection link put on uniforms and take them off at the air raid clearing signal. Flight fighters decontaminate the contaminated area. Soldiers of Osoaviakhim are paraded.