"Okay, Bucky. If that's what you li--" Bruce glances back as he speaks, trying to make some brief eye contact, when he sees the step under Bucky collapse.

What happens next is completely instinctive. He braces himself on the banister, his grip becoming iron, and grabs Bucky's fleshy arm with the other. And then a second later, he remembers that both his hands and arms are suffering from second-degree burns. He remembers because it's blindingly painful to hold onto things so hard.

He just clenches his teeth and keeps his grip tight. "Got you."

He hopes that the Capitol doesn't collapse the step under him, because his ruined hands aren't strong enough to hold himself up.