[Knock Out appreciates the increased security... but he still doesn't actually know this disembodied voice claiming to be a Starscream, and that makes him inclined to be wary and evasive.] Usually he's better about responding to his hails-- at least when they're from me. When he doesn't...

[Well, there's not a good precedent, and that shuts him up.]

[He manages a laugh, if a dry and humorless one.] Oh, he didn't do anything to me that warrants any apology. You just don't sound anything like the one I know, that's all~.