Board Thread:Metal Gear Solid V/@comment-68.207.141.23-20140915183235/@comment-25424529-20140915195206

Possibly. Thank you for taking notice of this though!

However, in the 2014 Nuclear Trailer, the "shrapnel" seemed to have grown in length -- to the point of possibly being longer than Big Boss' skull.

If it is shrapnel, I imagine Big Boss has some serious brain damage.