Messy is definitely a word for it. Jim can tell they are nearly matched in strength and training. Khan's style is far more aggressive than Steve's, and Jim has seen what Khan can do once he gets his hands on somebody.

He's never going to be able to forget that sound. He's sure of it.

While he wants to help, he knows that he'd only be a liability if he tried to step in, and the better place for him at the moment is right there with his communicator. He'll wait until Security arrives. He just hopes Steve can hold out until then without anybody getting hurt too badly.