Of course. Of course Bucky won't go on without him.

"Hell," says Steve.

He looks around to get an idea of how to manage this. He bends back the railing to give himself more room, and takes several steps away from the chasm. The explosions grow only more intense--it won't be long until the building comes down around them.

There's a moment--just a moment--of doubt. I don't expect you to understand this because you're just a chorus girl. He knows he can run fast and far. He knows he can leap high.

He doesn't know if he can do this.

He runs, and at the edge, he jumps.

It's truly a leap of faith.