Sault Ste. Marie, Ontario the locks. An anti-aircraft training facility was established north of Sault Ste. Marie on the shores of Lake Superior. Barrage balloons were installed, and early warning radar bases were established at five locations in northern Ontario (Kapuskasing, Cochrane, Hearst, Armstrong (Thunder Bay District), and Nakina) to watch for incoming aircraft. Military personnel were established to guard sensitive parts of the transportation infrastructure. A little over one year later, in January 1943, most of these facilities and defences were deemed excessive and removed, save a reduced military base at Sault Ste. Marie. The first "Algerine"-class minesweeper in the Royal Canadian Navy
Sault Ste. Marie, Ontario also home to the Ontario Forest Research Institute and the federal Great Lakes Forestry Centre. Sault Ste. Marie has over 30 elementary schools. The Sault Ste. Marie Greyhounds are the city's most recognized sports team having existed since the formation of the Northern Ontario Hockey Association in 1919. The Hounds won national championships twice including the 1993 Memorial Cup and the 1924 Allan Cup. The Greyhounds play in the GFL Memorial Gardens, a state-of-the-art downtown arena that replaced the Sault Memorial Gardens in 2006. The current Hounds have retired five jerseys since joining the Ontario Hockey League in 1972: #1