Active Noise Reduction Headsets
Does any military aircrew use ANR Headsets?
Following excellent briefings many years ago, the aviation Doctors taught me all about hearing damage, and the benefits of proper protection.
I asked then about ANR, and the reply was "They haven't been tested by the military, and besides, what if the batteries go flat?"
I have yet to see any in service, yet in civvy street they are all the rage.