Your comment made me go back and actually read the FOIA document, and indeed it does read as though the police used an LRAD (presumably at low power) in a manne

Your comment made me go back and actually read the FOIA document, and indeed it does read as though the police used an LRAD (presumably at low power) in a manner similar to a loudspeaker to convey information, not in a forceful, damaging manner.