The plane is engulfed in the smoke. Tried sharpening (unsharp) while I selected just that portion, but really didn't like the results. So....I got a bit more complicated, I zoomed in tight on the lower wing an using setting #1 on the Clone brush, I straightened up the line using identical pixels (two pixels away) and at least make the wing look sharper. That overall, I think, improves the rest of the plane. And as was suggested I cropped a bit closer.

You think this is a wrong approach, could I have sharpened it better without replacing pixels, I don't know, does anyone else.

Local Air Show