If you know so much about this, then you should try not to mischaracterise this attack as being related to 5G communication technology, with misleading titles.  We don't have enough information to conclude it was sound waves, and in fact it probably was NOT sound waves but biologically tuned electrical waves perceived as sound because it only affected US citizens and others did not hear it. Sound isn't selective like that.              Sonic weapons operate in both ultrasonic, and subsonic frequencies, and are not audible to human ears.  And those are sound waves, not electromagnetic waves.  It is irrelevant if the waves were generated using electronic devices.  That does not make the waves themselves electromagnetic, nor in any way related to "5G" as your misleading title implies. As you stated- we don't have enough information to conclude anything about the types of waves that were used.  Please don't distort what we do know about the attacks by suggesting that these were 1.electromagnetic waves, and 2.operate at 5G frequencies.   You cannot honestly assert that you know the frequency band used in the attacks, when we can't even conclude what types of waves were used! This is simply stretching the story far too much, and it needs to be pointed out.