In this video clip, http://www.rustfreetrucks.com/movie/shotgunauto12ga.wmv the side of the shooters head can be seen from time to time. He doesn't have head gear on and I can't see any ear canal softies.
A friend of mine calls them 'tankers ears' as it is so loud in tanks.
He may be well armed, but at least you can sneak up on the silly s.o.b..

FQ13