History Channel documentary on Canada’s Roswell – the Shag Harbour UFO incident
The Shag Harbour UFO Incident was the reported impact of an unknown large object into waters near Shag Harbour, a tiny fishing village in the Canadian province of Nova Scotia on October 4, 1967.
The impact was investigated by various civilian and military agencies of the Government of Canada. The Royal Canadian Navy (RCN) conducted at least one underwater search to attempt to locate the remains of any associated objects. The Canadian government declared that no known aircraft was involved and the source of the impact remains unknown to this day.
It is one of very few cases where government agency documents have formally declared an unidentified flying object was involved. Several military witnesses that were interviewed, including a RCN diver involved in the search, have claimed an alien spacecraft was responsible. It was also claimed by several of the witnesses that units of the United States armed forces were involved in the search. The case was also briefly investigated by the U.S. Condon Committee UFO study, which offered no explanation.
The History Channel has a pretty interesting 45 minute long documentary on the incident. Well worth watching: