“I don’t know what they used to blow the wall,” Bucky says, quietly. “C4 or similar maybe. Or they could have hit it with the rocket launcher they used later, but I doubt it would have done that kind of damage. It was a pretty controlled collapse.”

Bitterness leaches into his tone for a moment before he forces it back. “By the time I pulled myself out of the debris two of the team were carrying Klaue out through the wall, and the third was covering them.”