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 language resolution the controversy. The resolution was struck down by a court ruling in 1994, and ceased to have legal effect. In 2010, John Rowswell, a subsequent mayor of Sault Ste. Marie, apologized to French Canadians across the country for the resolution. Sault Ste. Marie was founded by French-speaking missionaries in 1623 but had become overwhelmingly English-speaking by the twentieth century. In response to a French-language education controversy which began in 1987 when a group of Franco-Ontarian families lobbied to have a new French school opened in the city, the Sault Alliance for the Preservation of English Language Rights (SAPELR) was formed