"Yes." Bitterness leaches into his voice. "They were an elite death squad. Volunteers. Everyone wanted to be like the Winter Soldier. They took the serum to make more of me. And it worked, at first."

He can't hold her gaze, and looks back out across the clearing.

"At first. Orders were to fight me, one at a time, to test operational parameters. One of them smashed me into a wall, and the adrenaline rush --"

He shakes his head.

"The serum poisoned them. They lost their minds and started trying to kill everyone; scientists, soldiers, you name it. Command ordered me to escort him safely out. I did, and locked them in. They froze them in cryostasis while the scientists tried to figure out how to get control of them. If Zemo could have controlled them like he did me..."

His voice fades into silence.