What is James Chaney Looking Back at?

[LR Trotter]

In the Altgens photo, and I have never been accused of being an expert at photo analysis, the JFK image has always been hard for me to decipher. If I am seeing a blemish/hole near the rear view mirror, slightly to the driver's left of the mirror, then it is blocking a part of JFK's left ear area. For my view, I believe I am seeing JFK's clinched left fist from the back/top side, and a semi clinched right hand/fist from the palm side. It appears that he is reacting to a throat and/or back wound. But I am troubled by the inconsistent windshield tint as it appears in the photo, as well as what appears to be a somewhat long left arm, if that is what I am seeing. I wish I was positive what part of his face/head I see, but I need some help to comprehend what is visable.

::