He can't actually remember a time when he was calm. He can fake it pretty well, but everything in his too-short memory is full of fear and fury, worry and stress. Even his sleep.

But he's not going to kill anyone. He's not. He doesn't do that anymore.

And maybe HYDRA's here, maybe they're not. But he can't go around scaring civilians, that's not right either. He takes a shuddering breath and gets the moment of more obvious terror under control. Constantine is being very patient with him, that's a kindness. "Take the stairs," he answers at last. The moving metal box is not a thing he can do, but if there's stairs, he can do that. He's done stairs many times since the helicarrier, and they've been fine.