Hmmmm.....actually, it looks like a tin foil fez!
It is. He was a Shriner in a previous incarnation and found out that the foil version improved his memory to the point where he can now remember things from back when Ron Paul first landed in "Area 51".

All levity aside, Alzheimer's has impacted my family.
It would be easy just to dwell on things over which you have no control.
I think sometimes we look on the light side of things just to keep all those negatives from winning in a shut-out.
They either were research curing baldness and stumbled on the Alzheimers link or this helmet has a very undesirable side effect. :=)