"There's more than one kind of threat," says Ironhide. "Cybertron'd been peaceful a couple million years before Megatron went bad. Stayed peaceful a good long while after that, too- if you can call watching the resources that should've gone to production being moved into the military, and the justice system getting harsher and harsher by the year with no end in sight, anything like peace. I dunno where we'd be if Prime hadn't called him on it, but it wouldn't've been anywhere good."