What I wanted to do was use srikethrough on “Air Force” and add “Army” in bold, but couldn’t manage it inside the caption. So I moved the credit outside/below the caption box. Maybe there is a way to do it in the caption box and I didn’t find it. But if not, please consider this a suggestion for a rainy day.
My experience is that most people don’t read footnotes, but they will read captions.