Just catching up to this news, reported by WCCO (CBS Minnesota) on Jan 27:
Minnesota State Patrol uses long range acoustic device, first used by military, to disperse Maple Grove protesters.
https://www.cbsnews.com/amp/minnesota/news/minnesota-state-patrol-long-range-acoustic-device/

Minnesota State Patrol uses long range acoustic device, first used by military, to disperse Maple Grove protesters
Minnesota State Patrol troopers used a powerful sound system first used by the military in Maple Grove, Minnesota, to communicate and disperse noisy protesters.
