Raytheon Canada Limited (RCL) [RTN] said Thursday it has been awarded a five-year contract by Public Works and Government Services Canada for operations and maintenance of the North Warning System (NWS). The contract includes two options totaling an additional five years. Canada did not provide the contract value for public release. The North Warning System is a joint Canadian and United States radar system covering the north from Labrador to the Yukon. The NWS detects airborne threats across North America's…