The first image is underexposed and blurry. It also appears that you've applied a vignette which is not permitted. There are also some identifying marks which would have to be edited out in order to avoid an IP rejection.
The second image is also not sharply focused.
The third image is also underexposed and has many identifying marks.
The fourth image is underexposed in the shadows, and not sharp enough.
Denoise can cause a softening of the image, so should be used sparingly.
First: you have a major exposition problem, as shown on the histogram:
No highlights, no whites and missing contrasts. In addition, there are identifiers on the helicopter that need to go, if you can resolve the quality issues.
...Afterburner: You seem to love underexposed pictures:
In addition, the identifiers must go. I do not know if the German Luftwaffe coat of arms is protected, but the ID numbers need to go in all cases.
The refuelling picture is also ill exposed. In addition, it is not very sharp.