ecology, attack, war, destruction, chemical, destroy, toxic, toxicity, military, protective, face, face mask, pollution, rubber, army, ecological, militants, disaster, radiation, gasmask, black, armed forces, environment, misfortune, force, impurity, person, regular army, mask, military action, tragedy, militant, environmental condition, calamity, protective covering, situation, trouble, military service, catastrophe
Old gas mask of World War II