 Plymouth, Massachusetts--Newsfile Corp. - February 17, 2021 - Plymouth Rock Technologies Inc. CSE: PRT OTCQB: PLRTF FSE: 4XA WKN A2N8RH Plymouth Rock, PRT, or the Company, a leader in developing threat detection and unmanned technologies, is pleased to announce that the United Nations UN mission in Somalia, using a PRT drone on a routine return delivery, broke the existing beyond visual line of sight BVLOS drone delivery record. Plymouth Rock believes that this flight... 