The wingtip of an airplane that ran into it.
The entire rear fuselage is broken lose, notice the frame seam that is opened just ahead of the star insignia. Rear fuselage twisted, I would be surprised that it would have been able to fly with that damage.
Yep, I see that as a possible. Another possibility is air collision. But also think if this, that elongated hole could have been from a 20 mm round just hitting at the right angle.
Idk, but like you there could be a possible questioning that who ever took to photo and wrote about it could have exagrated some.