File:Inside mobile short-wave radio station - Operation Alert, 1954, by the Federal Civil Defense Administration, from the Digital Commonwealth - commonwealth h128rf282.jpg
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![File:Inside mobile short-wave radio station - Operation Alert, 1954, by the Federal Civil Defense Administration, from the Digital Commonwealth - commonwealth h128rf282.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Inside_mobile_short-wave_radio_station_-_Operation_Alert%2C_1954%2C_by_the_Federal_Civil_Defense_Administration%2C_from_the_Digital_Commonwealth_-_commonwealth_h128rf282.jpg/736px-thumbnail.jpg?20220101203321)
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