I suffer from tinnitus and belief me it is no laughing matter, everytime I see those artillery men fire a howitzer without as much as ear plugs I get angry. If the PLA can’t so much as provide such rudimentary and cheap protection, it is disappointing.Tinnitus builds character it’s in the PLA field manual I’m pretty sure, along with arthritis and frostbite . But I’ve seen them with and without so idk probably depends on how “elite” the unit is l