Yeah, well, he submitted himself to it. Colonel said it wouldn't be necessary.

[Bucky's... quiet, for a little while, looking down, away.]

[Then he does speak up, voice dull. (He hasn't, before.)]

I don't... think I'd have lived as long, if it'd been Schmidt, in charge. Zola... Zola was curious. I started out just out of a pneumonia, so he wanted to see how long he could stretch it, considering.

He had this... blue energy thing, you see. The Tesseract, Steve said, I never saw the cube, only its effects. Zola had ways to put energy from it into other things. Like weapons, but not only. I'm not sure he aimed for pain, all the time, even, more like wanted to know what it would do if he did this or that.

[Pain was just one of the effects.]