If it's a praise (this is rare), we'll get a generic letter from Larry.

If it's a complaint, we probably won't hear anything about it at all as it will probably be thrown away immediately by whoever opens it @ HQS (they have better things to do that sort through the "John is an @$$hole" letters), unless it involves a legal (ie, discrimination) or medical issue. In that case, as skydiva said, we'll just give our account of what happened and never hear about it again.