Heh, onetime I had to get on a conference call when the blue angels were in town. "No, I don't live in a war zone, sorry about the noise."
"So, about that system rrrrrrrrrrrRRRRRRRRRRRRAAAAAAAAAAAAAGH and you think so?" (excuse the bad jet noises)
That was a fun hour or so - especially since, even muting the mic when you're not talking, when planes are taking off every 60 seconds, you're bound to get some background noise...
"No, I don't live in a war zone, it's just Chinese New Year."