After an exhausting session with Victoria's Secret Police, Ed Majden
blurted out:


There is quite a controversy as to who brought down Manfred von
Richthofen, the Red Baron. Canadian pilot Arthur Roy Brown is generally
given credit for bringing him down on April 21,1918 over allied territory.
Further investigation points to Australian machine gun ground fire.

Norman Franks wrote a fairly detailed explanation. I don't think he
has much doubt, except that there's no way Brown could have fired the
bullet that killed MvR.

And the Final Jeopardy answer is "Popkin"

Juvat