There were a lot of experimental techniques that went into making the Winter Soldier. Some of them worked better than others, and he doesn't actively remember most of them. He just knows it was bad and he doesn't want any more of it.

"I don't know. I don't remember." He pats at his scrubs, wanting pockets. Wanting to shove hands into them, but there aren't any. Ugh. "Before appearing at ADI. I had twenty-eight hours of memories."