I'm inclined to agree with JenAjd!
My home in St. Louis was quite close to a major hospital complex. It was, therefore, very common to hear sirens at all hours!
When I think about it, the number of sirens - reflecting emergency situations - I now hear in TV, it doesn't surprise me at all! After all, we're now a community of some 80,000 - there's bound to be some emergencies!
Sirens always concern me! But, . . .
SWR
