I'm not certain, but I do believe whenever one of the Decepticons is speaking in Cybertronian you can also understand what he is saying. Does anyone have a list of what each one says, or what he might be saying?

For instance, when in the file Banachek shows Keller the Rover mission, I was nodding off but heard the supposed 'Blackout' rumble "Hey. Turn it off."

I appologize for not searching if this lists exists, but my puters possessed by Starscream's spark and is currently eating Jolly Ranchers.