Two herons in East Tennessee

This 4th photo is not the best, but look at those wings.

These 2 Heron were fighting. Thought one was going to kill the other. I think I disturbed them and one flew off. Is this part of nature? Maybe the one was injured and the other kills it? Ecobirder, do you know? If the one was not injured to begin with it sure was afterwards. One flew off, but the other one looked in bad shape afterwards.