The army plans 47 Arctic detection stations, starting next summer

Planned stations

47 stations

National Defence plans 47 detection stations across the North to strengthen NORAD's surveillance and early warning, according to regulatory filings.

They would run from Yukon, near the Alaska border, across the Northwest Territories to Alert, Nunavut. Aircraft and helicopters would airlift the solar- and wind-powered stations, which would stay unstaffed.

Project Crossbow

1. Next summer

   First deployments could begin

2. 2029

   Initial operational capability

3. 2032

   Sensor project due to be complete

Under Project Crossbow, first deployments could begin next summer and initial capability is due in 2029.

Where

Two of the sites are in Quttinirpaaq National Park and four in a migratory bird sanctuary on Banks Island; filings expect little or no wildlife impact.