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
John Johnston House (Sault Ste. Marie, Michigan) John Johnston was Justice of the Peace in Sault Ste Marie for many years. He remained in Sault Ste. Marie for the rest of his life, remaining in the fur trade. In 1812, Johnston helped British troops take control of Fort Mackinac on Mackinac Island. In 1814, American forces burned his house, as well as $40,000 of his goods, in retaliation. However, Johnston rebuilt, in part by selling his parent's estate in Ireland, and became connected with John Jacob Astor's American Fur Company. John Johnston died on September 22, 1828. In 1794, John Johnston constructed a house on this site.