Starscream lets out a rather undignified squeal of terror when Megatron pins him, but wisely keeps his mouth shut for the time being. Fortunately his shoulder is well armored, so the pain from the impact is minimal, but he he is well and truly trapped under that huge metal hand. There's not much he can do other than cower in abject terror and try to remain alert to any openings that might allow him to turn the situation around.

As Megatron rounds on Knock Out, he almost begins to feel bad for being that upfront about the medic's transgressions... but it was a spur of the moment decision, and he'd been put on the spot as well as being driven by spite. If the opportunity presents itself, he'll try to speak up in Knock Out's defense, but for now he decides it best to keep his thoughts to himself.