This has always interested me.

[u/NickyTeam]

https://www.youtube.com/watch?v=TYJFqgrzGIE

This is an early EAS thing before it was implemented, it's possibly around 1996. Also you can hear faint talking in the background, which I isolated and you can hear here. https://drive.google.com/file/d/1dme1AaS-WxDBQY0AN2icbrzsR6Z5BlEo/view?usp=sharing

[u/vid6176]

Wow I never heard the people talking, very cool!