I grew up in a very informed household; my parents regularly watched local and national news several times a day and the radio was always on during the day while my mom watched me. In the 70′s we primarily listened to a local AM station that was a CBS affiliate. Every hour I was warned of impending doom by the news sounder that came on before the reporter started reading (the exact news sounder is at 1:14 in the Youtube link).
When I heard that sound, I knew bad things were getting ready to be told: serial killers, cattle mutilations, hijackings, mass shootings, bombings, and the worst of all – gorillas (guerillas) killing people somewhere in a tropical hell. To a 5 or 6 year old, that news sounder, and the dread that always followed, warned me to never go to big cities, airports, or foreign countries. Other than the ominous storm warnings from the National Weather Service, which have been covered already on the site, nothing else came close to producing this kind of trauma in me.
Again, the specific sounder is at 1:14. Thank you for an outstanding and very needed website.