Marcin Cieślak> The weekly broadcasts of the EBS attention signal and test script made it a significant part of the American cultural fabric of its time, and became the subject of a great number of jokes and skits, such as the sung versions of the test script in the late 1970s. In addition, many people have testified to being frightened by the test patterns and attention signal as children.
https://en.wikipedia.org/w/index.php?title=Emergency_Broadcast_System&oldid=862328648
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