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 Airport Ste. Marie airport has frequent medevac, business aviation, and charter operations. It is a frequent stopping point for private pilots. Sault Ste. Marie Airport is home to the Ministry of Natural Resources Fire Management Centre and Flight Training Centre. The 622-square-metre facility is the first of its kind in Ontario. It is equipped with one of the most advanced flight training devices available, which simulates the sights, sounds and motions of the CL-415 water bomber aircraft used to fight forest fires in Ontario. Sault Ste. Marie Airport Sault Ste. Marie Airport, , is an international airport located west-southwest of the