Im calling that is the same Marine in both pics. They failed to change the profile of the slacks, same outline and creases and if you examine the uniform its exactly the same - that pic with Trump is low res and small and I can still see that is the same solider and they have shopped in Bitem a different background and changed the reflections in the glass.
Waste of time to do all that and use that same Marine
The Biden Marine has a black mask on. The Trump Marine has no mask on.