on a related note, check out SABURO SAKI's ww2 history.
attacking what he thought was a wildcat, turned out to be a avenger and was subsequently hit in the head by the grumman's rear gunner.
a round hit him in the head and lodged in his brain.
after a 4+ hour agonising return flight back to base and what was no doubt a perilous landing, said round was removed WITHOUT pain relief!!!
AVIATORS.....a breed apart