Loud bangs heard in Plymouth 'could have come from Merrivale' Devon and Cornwall Police Force Incident Manager said the bangs were related to a "military exercise" at Stonehouse Barracks but the Royal Navy said there were no training exercises taking place in Plymouth - but there was in Merrivale Updated The video will auto-play soon8Cancel Play now Never miss a big story in Plymouth again with our daily newslettersInvalid EmailSomething went wrong, please try again later. Sign me up! When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.