Figures you'd want to complicate that crap. Mine had an "L" and an "R" on them.
That's not a marine thing, mine do. Actually my hearing aides have one marked red and another blue. Not sure how anyone could put the wrong one in the wrong ear? LOL!
"The government is a child that has found their parents credit card, and spends knowing that they never have to reconcile the bill with their own money"-Shannon Churchill