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 on CBSM-FM and CBON-18 since 1981 and 1982 respectively, while Sault Ste. Marie has had two Christian stations (CHIM-6 from 2001-2012 and CJTK-8 since September 2017.) Aside from the Timmins-based CHIM, all are repeated from Sudbury stations. In 2014, Village Media launched its own network of six internet radio stations dedicated to Sault Ste. Marie under the banner of VM Radio, though it ceased operations by 2017. Sault Ste. Marie was also the originating location of the internet rock radio station Energy Rock Radio before it relocated to British Columbia in 2011. Although Sault Ste. Marie is the second largest