clicking sounds sounds that reveal the presence of radioactive the instruments a geiger counter is considered a radioactivity in the sounds we can hear this radioactivity is coming from a small piece of radioactive material inside this plastic cylinder the small amount of radioactivity coming from the cylinder is harmless the luminous dial on this watch also gives off radioactive rays which we get on the geiger counter even when there is no  radioactive material near the geiger counter continues to click this is caused by cosmic radiation that continually bombards us from outer space but we don't get enough cosmic radiation to harm us today atomic scientists produce radioactivity and large amounts of radioactivity and radioactive materials have many peacetime uses but we know too that they can be used harmfully as in atomic bombs the chance of your being hurt by an atomic bomb is slight but since there is a chance you must know how to protect yourself to protect yourself you have to know what the bomb does besides blast there's radioactivity and heat can we protect ourselves from these these children are protected concrete walls help stop radioactivity any walls stops the heat the heat storage is the house but does not harm the children any solid gives some protection the figure it is the better we have the national defenses to intercept an enemy and we all form a team to help each other through emergencies you are on that team so as your family each member of it and in your community every doctor firem every policeman and nurse every lineman and operator every civil defense worker in fact every community employee is ready to help you if you need it so your community is  ready to help other communities we have state the national debt gutters for civil defense and your city as a civil defense corps we have a warning system and a system of defen yes we have the equipment and the people for an effective team but like any team it can win only one everyone knows his job and does it well what is your job for cover the nearest cover don't try to make it home unless home is that narrow space to go don't hesitate to find cover everyone is in on this strangers will understand finding shelter quickly may save your life if you can't get into a house just behind a wall or on the side where you from the city windows to protect against the possibility of broken glass heat down radioactivity turn off fires if you are home and are not assigned to civil defense duties go to your prepared shelter those who are in shopping centers go to  now will go down the bay and this practice i learned we are assuming that the attack will come on the waterfront area now there's just where you're wrong we need this practice no come on us do our job that's good thinking we all need practice here's a clean well prepared shelter in the basement have a battery radio and they have a chanst of fat extinguishers they have other emergency supplies to a flashlight a look with first aid kit with plenty of bandages tape a red cross first aid book a few cans of food a good supply of water blankets and an electric lantern in reserve you know the stuff would come in handy on a camping t at school they told us we should be away from windows and behind double wall you know like an inside hall ted's right if you live in an apartment house you can't go to the basement so that shows that area if not is marked for you fine cover away if you're on the playground run for shelter if you're in the schoolyard get into the building quickly  inside go to the shelter area you've been assigned take your place on the floor there's one good way to protect your eyes and neck in case of a bombing wait for the all cl outer garments they may have radioactive particles on them if your home take shelter and stay down for about one minute by them the danger from radioactivity heat in the blast at best protect your may be contaminated dead in sewer waiting for the all clear must do to be safe doing a good job means simply following the rules in an alert or an attack and waiting until all is clear again in this fairly and troubled stage of the atomic age our very lives may depend on always being alert