![]() The clean-up was designed to keep chemical contamination from the DEW Line sites out of the Arctic food chain, and ensure that the sites are restored to an environmentally safe condition. With their closure and many of them rebuilt as NWS sites, a clean-up project was undertaken to remove surplus infrastructure, treat chemically contaminated soils, and stabilize landfill sites. The former DEW Line sites were operated using practices and materials accepted by the environmental standards of the time. Logistical and maintenance support for the NWS is supplied by the Air Force Materiel Command of the United States Air Force, located at Ogden Air Logistics Center (OO-ALC), Hill Air Force Base, Utah. Staffed sites are operated by the Royal Canadian Air Force, but physically staffed by civilian contractors. The bi-national North Warning System Office (NWSO) is located in Ottawa, Ontario and staffed with both Canadian and American military and civilian personnel. The official activation of the NWS and inactivation of the DEW Line took place on 15 July 1993. DEW sites that were not transitioned to North Warning operation were eventually closed down. Throughout the late 1980s and early 1990s, new NWS LRR radars replaced former DEW Line sites. The NWS began limited operation in 1988 with the commissioning and acceptance of the three newly constructed east coast sites BAF-3 Brevoort Island, Nunavut, LAB-2 Saglek and LAB-6 Cartwright, both in Labrador. With the signing of North American Air Defence Modernization agreement at the " Shamrock Summit" between Prime Minister Mulroney and President Reagan in Quebec City on 18 March 1985, the DEW Line began its eventual upgrading and transition becoming the North Warning System (NWS) of today. The Distant Early Warning (DEW) Line, constructed in the late 1950s, was reaching obsolescence in the 1980s. ![]() Some short range stations lack weather stations and UHF Tactical Radios. : 17 Short Range sites consist of a single AN/FPS-124 radar, satellite terminals, power generation and fuel systems, and a small emergency shelter that can accommodate six people. ROCC information is then passed to the NORAD Combat Operations Centre (COC) at Colorado Springs, Colorado.Įach Long Range site consists of accommodation buildings, radar towers and radomes, generator and fuel systems, satellite terminals, automated weather station, and UHF and VHF ground-air-ground radio. : 16 The Alaska Regional Operations Control Center (ROCC) at Elmendorf AFB, Alaska controls the stations in Alaska the Canada East and Canada West Regional Operations Control Centres (ROCCs) at CFB North Bay, Ontario control the stations in Canada. ![]() The radars and tactical radios are owned by the United States Air Force. In Canada, the station sites are owned or leased by the Government of Canada, which also owns most of the infrastructure. : 16 There are 13 long range sites and 36 short range sites. The NWS consists of both long range AN/FPS-117 and short range AN/FPS-124 surveillance radars, operated and maintained by North American Aerospace Defense Command (NORAD). Overview The North Warning System as part of NORAD radar array as envisioned by Canada and the US in 1987. It replaced the Distant Early Warning Line system in the late 1980s. It provides surveillance of airspace from potential incursions or attacks from across North America's polar region. The North Warning System (NWS, French: Système d'alerte du nord) is a joint United States and Canadian early-warning radar system for the atmospheric air defense of North America.
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