So Many Sirens

I’ve been at work for all of three hours and I’ve heard sirens outside six times. And not the kind coming into the hospital. The kind going by on their way somewhere else.

Police… Fire… Ambulance… I’ve heard ‘em all. Is there something going on out there that I’m not aware of?

What is it about hearing sirens that 1) automatically peaks our interest and 2) automatically makes us nervous?