Sounds (or lack thereof)

[kresty]

Sounds for the Sentry Droid is an interesting topic.  I'm not sure how I feel about making my own, except that we'll have to invent sounds since he didn't make any. 

Kinda curious if any noises ever bounced through Oliver's head while he was building him.  Realize that's a longshot, but I can't imagine any other reference unless they actually thought of using him more actively somewhere.

I figured since he's a Sentry he'll need some sort of alarm sound, I was wondering about some sort of sonar-ping'ing sound too.  That's about as far as I got.