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
Media in Sault Ste. Marie, Ontario system — the station's only direct local production consists of news reports which air as part of regional newscasts produced at the Sudbury station. The city formerly also had its own CBC Television affiliate, CJIC-TV. However, that station was acquired directly by the CBC in 2002, and became a straight analogue rebroadcaster of CBLT-DT from Toronto; the repeater would close down on July 31, 2012, due to budget cuts. Sault Ste. Marie is not designated as a mandatory market for digital television conversion. Sault Ste. Marie also easily receives American network affiliates over the air from Sault Ste. Marie, Michigan,