Mysterious hum coming from Golden Gate Bridge

[somethingelseishere]

I wonder what pitch that's in? Sounds like a sad choir.
When's the last time repairs were done on that bridge?
I'd be wary of crossing it now for sure! They may have "fortified"
it with more than building materials if you know what I mean.

Maybe something that would cause major ripples if hit with directed energy weapons?
Do you think they have the balls to take out a bridge this massive??
Well, they took out the two biggest towers in NYC, soooo...

BTW, speaking of pitch... most car horns are in F or F sharp.