Back in 06-07 I rolled with one earplug on the roadside ear (my right ear) and nothing in the other ear (my left ear) so I could hear my crew and the radio. During dismounted patrols I would leave it the same because my roadside ear was also my rifle side ear. I did that for 16 months.
Fast forward to today and the ringing in my ears is far worse in my left ear. Go figure.
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